Hello everyone. Here is an update. I acid washed and this is what it looked like afterwards:
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It was a lot whiter, but it was definitely showing its age in MANY spots. Anyway, I ended up having to order two 10lb tubs of plaster patch at $46/each (what a rip off), and I did some plastering:
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For the life of me, I cannot figure out how folks that do this for a living end up with a smooth surface. Do you guys think I should try using an orbital sander to smooth these patches out? I visited a neighbor that had their pool resurfaced last year with a smooth pebble variety (but NOT Pebble Tec) and the surface was as smooth as a chalkboard.
Anyway, I'm thinking that I'll go to Home Depot and buy some sand paper to attach to my electric sander and smooth these patches out, then fill her back up and rock on until the winter. What do you guys think about that? I also ended up buying one of those rubber cork stopper thingamabobs to secure my pool light cord into the niche hole, then I blobbed a bunch of underwater marine sealant around it (to hopefully stop the leak).
Last thing - since I really want to try chipping out and resurfacing the pool by myself this winter, I came up with a strange idea: I figured I could contact a local company and volunteer my labor for a day on a resurfacing job. I'll be willing to sign a voucher saying that, if I get hurt, I won't sue. I simply want to be around a crew while they do a chip-out and replaster. I figure the situation would be mutually beneficial. What better way to learn, right?

I'm a healthy guy, so figure that I would be a good asset to a crew...I could do the hard labor and help them out while being able to witness the guys work their plaster magic. Call me crazy, but I think it's a good idea.
Anyway, I hope to hear some advice about the sanding. Maybe you guys/gals will tell me to skip that and simply to straight to filling it back up.
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For some reason, my first attachment didn't show up. Weird. But you can still see my awful patches = )