Hayseed, you got the pH backwards. If your pH is to
high and you want to lower it, add MA. If your pH is significantly too
low and you want to raise it, add Borax. If it's say 7.1 or 7.0, you can just get in and play in the pool and the splashing around will help raise it up. If your fill water is super low like mine (around 4.8 pH or so), you might need to add Borax to bring it up quicker.
If you have not added any water yet (which I didn't realize before) you can already assume your CYA will be at 0ppm since it is not naturally found in water. So you can type in 0 in the first box on
PoolMath, and 40 on the second box, and it will tell you how much to add.
Also, when you get your test kit, you can go ahead and test you pH, CH and TA. Whatever the results are will be the same results for your pool once it's filled, so you can already know how much you need to adjust your pH and if you need to raise the TA.
Now about the CH, I somehow missed the fact this is an Above Ground pool, and that it has a vinyl liner. Vinyl pools like ours are lucky, since we really don't have to worry about the Calcium Hardness much at all. I only test my CH once every couple of months and that's just to see if I can get it to 0ppm as I have to drain a little water when it rains heavily. There's no worry about it being too low (mine is at 20ppm). It can be too high, but that can also be managed if it's the case. Best thing to do is go ahead and test your water that you'll be putting in the pool and we can go ahead and tackle those chemicals so you'll already know what to add for them.