C-41 and RA-4 are different processes. C-41 bleach can be used for E-6 but not for RA-4. If you want to keep chemicals down (and have better quality) I'd avoid the bleach-fixes (BLIXs) and go for a Bleach and a Fix. The Fix then can be shared among B&W, C-41 and RA-4. The Bleach can be used in E-6.
Originally Posted by Mike Lyons
The Superstabilizer is not needed for RA-4, nor the stabilizer for C-41 but they are not a bad idea. RA-4 Superstabilizer is not only part of doing a NP (Non-plumbing, non-water) but also improves the whites and the long-term archival quality of the dyes--- a Super-STAB RA-4 print will last longer than one that did not get a "treatment". Its also not a bad idea to use a hot air dryer for C-41 and especially E-6 as they stabilize the film dyes as well. For RA-4 I use a IR dryer--- which the added benefit that I don't have to wait long for prints to dry to sync to neutral gray.