Bro, you don't need to refridgerate anything.. unless you got GH or slin..

Secondly, I would split the injections. I love injecting, so even if it weren't for the better gains, I would split them anyways, but call me crazy! Assuming you are going with 200/250 cuz it sounds like you got your mind set (although I would up it to 400/500) I would do 1/2cc of each on sunday, and store the rest for another 1cc (1/2cc of each) on wednesday.

As for site injections, I don't think they work cuz I have been injecting every day for the past 2 and a half weeks (I am on fina) and haven't noticed any localized growth. My injection rotation looks like this biceps, triceps, delts, quads, pecs, calves and no localized growth at all. It may vary depending on which AS you use though, but Test Prop daily injects also didn't seem to produce site specific growth.

Good luck, Later