Wont be a problem if you do reasonable long cycles, and dont overdo dosages. if you dont get big, it aint the dosage.
Shit, the guys in my town havent even heard of the term pct! and have run cycles since they were teens.. and do not follow the time on equals time off thing at all.. a friend of mine just had a daughter btw.. and have ran any kind of shit, for too long, without pct, and almost non off time..
although, i think pct is important. but for estrogen related sides. a pct will add the cycle length with weeks, -making it longer untill next cycle.. think on that one for a sec..
if anything, arimidex.. maybe hcg if you are and old rag..