I wouldn't worry too much about the 3 droopy ones, so long as you gave them a good watering after the transplant I'm sure they'll pick up in around a day. I just use plain tap water which i've never checked the ph. It seems ok but I need to test it soon. I just leave mine standing around in a bottle with the top off for a few hours. (apparently letting it stand gets rid of a lot of the stuff in the water that may harm your plants, but does nothing for ph as far as I know.)
Can't wait to see your new pics!