STOP! I'd like to discourage you from pursuing this bulk-loading idea any farther. The economies you speak of are false, especially if you are reusing cartridges. You will get light leaks from the cartridge sides and scratches from the cartridge felt at the worst possible times, ruining only your most wonderful photos.(posted 8412 days ago)Unless your luck is a whale of a lot better than mine, save yourself some genuine heartache and buy pre-loaded film. Buy in bulk, look for specials, do whatever you have to do, but avoid subjecting your film to twice as much handling and potential for scratching.
As for developers, sorry, my recommendations would all be powders: D- 76, XTOL, and Microphen. And, yes, all of them will take you to EI 800 with those films, but with significant loss of shadow detail, in my experience.