Here's the report since I HAVE to have a "sit down job" tonight while kids swim. They gotta get the most out of this ultra-short season they have, and I gotta rest!
Current state of the pool:
Pump and filter are running great. Love having valves on the returns, glad we did 2, and SUPER glad my installation friend thought to put the 2 valves next to each other beside the pump. I can stand there and see the flow on both returns as I adjust them and the variable speed pump to get just what I want. And having had only Intex pools and pumps up till now, WOW is it ever cool to have the oomph of water at my fingertips. I am not a car person, but I feel like I have a Corvette or something!
Still adding some CYA. Otherwise, levels are all good. Water looks great. Bought cases of 12% liquid chlorine since I knew we'd need a ton at the start and until my CYA tests right. Beats grocery carts full of bleach, especially since I'm spending more time on a rake handle than doing errands.

Amazon is my friend this month. All the shopping I've done is with my fingers...new umbrellas, PVC fountain for the return, solar lights to hang in the trees, resin screen to hide the filter (who we have named Mr. Sandman).
Edging and Stair Weights and a Vacuum Question
Needsajet...I love the idea of noodles on the edge. Might just see if Amazon will ship me a heap of those too. We've literally bought all we could find in our small city this month to cover the springs on our trampoline and to make our rope float to divide deep and shallow. I'm not actually worried about anyone getting hurt on the edge right now with no deck to jump off of (although wait till you see pics of what I let them jump off of today when no guests were present). The rubber cover under the liner and the omega tough coping over the liner seem to be working very well and holding everything tight. I need to get around to taking off the spring clamps we used on liner-setting days, but they're so darn handy for hanging goggles and such from when there's no deck.

Thanks also for linking to the reel idea...I am very motivated to have that as our first project next season. This thing is gargantuan.
Kim, we made PVC pipe weights AND we used my bleach bottles as weights too...but we used sand wetted, not concrete. I am leaning towards just limping along for however long the kids are tough enough to swim (3 or 4 weeks?), then working harder at getting them right next season when we hopefully move them across the pool to attach to the deck. I'm not in favor of putting the sand INTO the stairs as instructions say, but have read many reviews saying that does work best. Hmmm...meanwhile, we have bags of sand sitting on the lowest step helping anchor them down.
Speaking of Amazon...I think I saw a gadget that would allow me to connect 2 standard vacuum hoses instead of ordering a super-long one. Again, Walmart clearance aisle had this season's HTH cool teal-colored tools at a discount, and my kids (and I) liked the color (and if my girl is happy while she vacuums, so much the better). So, I want to figure out how to connect 2 and make the most of the bargain instead of shelling out for a 60' hose. Has anyone done this, and is there a name for such a thing? I would love to know I am ordering the right thing.
Drainage and Yard Repair
Spread more rock today and put more dirt back where it needs to be...oh to have a mostly-green yard again.

Here is what I decided to do for my perimeter barrier:
1) tar spread on bottom 3" of steel bin wall exterior to protect from damp soil (you would not believe how UPSET I was when 12yo and 14yo brothers painted themselves in tar that evening...I wouldn't say I was motivating them with love at that moment!!...or how LATE the whole family had to stay up to clean tar stains off the carpet after some friends dropped by to see pool and unknowingly stepped in the boys' messes and tracked it ALL OVER the floors in the semi-dark room...who knew that WD-40 removes tar from carpet? it WAS nice to have a big family to help with that mess and rather surprising how cheerfully they did it!)
2) soil "cove" built from top of tar down and out from pool about 6"
3) old Intex pool (this is the 3rd one we wore out, and they make GREAT tarps) cut and placed on top of soil "cove" and on out about 18" into yard
4) rock on top of Intex tarp
Here are some decisions I made relative to my particular landscape:
5) We are using pea gravel (which I already had around the back of my house and want to be rid of) as the invisible layer...the "high" side of my yard was about 6" above the sunken pavers, so the "trench" space to fill on that half is substantial. I decided not to waste my river rock (more expensive, easier to stand on, looks better with my house) on filling the whole thing, so used pea gravel as filler for about half the depth, then covered with river rock. I am also using pea gravel on the side of pool which will ultimately have a deck, since it won't be visible. I am concerned about pea gravel in the pool, so when one shoveler got too vigorous and let a scoop fly, I offered a dime for every pebble brought out of the water to me. Crazy how fast the rock came back out of the water.
6) I live in a very flat, poor drainage area. Our many rain delays this summer were good for impressing on me where the water stood on the pavers (and eventually ran under the wall). I decided to take several loader buckets of dirt back around the high side and build a small berm around the circle of rock. It's low enough to just mow with a regular pass of the riding mower, but hopefully its slope is just enough to deter water from rushing into and standing around the wall.
7) I found a stack of plastic landscape edging on the clearance shelf at Walmart, so I have 120' of it piled outside where I pass by it multiple times a day and wonder if I actually want to use it to divide the rock from my berm/grass or if I can think of something better that won't break my piggy bank. We have hundreds of bricks left from a remodel 10 years ago, but right now, I can't even fathom turning them into an edging. I am too tired! Besides, they might make a great sidewalk through the yard one day instead, since I hope to not use pallets and tarps forever, ha ha
Off to cover the Sea for the night and then take a stab at posting pics again. Thank you so much for all the encouragement. This site has been great.