honestly 250 is a pretty conservative start but its smart for a first run to see how u react. most guys go for like 12 to 16 weeks because anything shorter is kinda a waste since it takes a while for the long ester to really kick in. for gyno just keep an eye on your nipples and have an AI like arimidex on hand just in case they get itchy or sensitive but dont just pop it for no reason or youll crash your estrogen and feel like garbage. your fertility usually bounces back fine especially at that dose but hcg is a lifesaver during the cycle to keep things working downstairs. pct is what really brings your natural levels back so dont skip that or youll lose all those hard earned gains!