yes, 75mg of prop eod will shut you down. for some poeple, you could call that a small cycle. i know guys who have grown well off of 1cc sust per wk. at that dose, i would consider it a lot dose cycle. and any gear you take is going to keep you shut down. you wont begin recoverying from it till you cycle off completely. until there, your body has no reason to produce its own test.
really, instead of cruising, why not just come off after the cycle, run pct, recover and then run your another seperate cycle when you're body is ready. your idea of cruising is only going to prolong your recovery and make it harder to recover when you do finally come off. you'll have to figure, but that time, your body would have been shut down from jan to sept. the longer you're shut down, the harder it is to get back in order. if you're older and HRT is a real option(you have to be over 35 in the USA in most cases) and you are certain that you dont want to ever be able to produce kids, then maybe cruising is an option. but if not, the price may be much higher. you dont want to be young an have ED, needing to take a pill every tie you want to have sex.