1. The blix temp doesn't matter.
2. I can get 10 rolls, but I am verrryyy careful not to contaminate. The chems do exhaust a little quicker then C41.
3. Yes, both developers need to be stored without air, as do pretty much all developers.

Btw, you may want to rethink step 8... PE has some stuff to say on the formalin at the end... http://www.apug.org/forums/forum40/1...tabilzers.html