I normally run test at 600-750mg for 10-12 weeks but 500mg is fine. Deca I've run for up to 16wks before but @ 400-600mg, your 300mgs is a little low. Def run test as long as you run the deca to prevent deca dick. You better have some clomid and HCG for when you come off to kick your boys back in. Thats a good cycle. Are you breaking up the test injections 2x a wk? If not you should and if you can get a hold of some d-bol(30mg a day) your good cycle would turn into a great cycle. But keep in mind if D-bol does enter into the equation your going to need something to combat the gyno like noveldex or liquidex. Just my 2 cents, good luck bro.