I recommend that you check Kodak's recommendation for C-41 processing in a rotary tube and follow the recommendation. The developer time is 3:15 and all other steps are taken to completion which means that you could fix and bleach for longer - but not shorter - times without it having any ill effect. As far as the rinse between the bleach and fix as recommended by Jobo, other than it taking an additional 3 minutes, it can't hurt. Jobo believes it best to remove the bleach from the film before applying the fix.