I only have 50 minutes to w/o in the am. If I do MIS, I find I can't get through the entire tape in this time (I do have to rest sometimes between sets). Anyway, my question is this. If I get through the legs and the chest, back and shoulder sections,(sometimes I don't get through the shoulders) Is it ok to leave the triceps and biceps (and sometimes shoulders) for the afternoon after work? Am I getting the maximum gains? What about PH and the PS series. I've just ordered these and now I'm concerned. Any input is appreciated.