short esters

finishing up a cycle of 600mg/wk test (300 x2, Sat Wed), used aromasin EOD @ 12.5 mg, and HCG @ 250 2x week (500 iu total weekly) after reading some of the good doctors feedback with other posters and the "Power PCT" stuff, i made some changes to the standard nolva/clomid PCT i was initially...

I've always ran long ester like Deca, EQ, Sust, Mast Enan, or a mix of 50%test enan and 50% test cyp, ect. in all the cycles I've done but lately a friend of mine says short esters like NPP, Test Prop, Mast Prop, ect. are better and I should try it out by doing a short ester cycle I want some...

2 questions... (1) will I do any harm when lifting while my e2 is so low that I can hear my knees when squatting. I'd rather take couple days off then to continue lifting and cause unnecessary wear and tear on my joints. (2). Short esters such as test prop causes more PIP than longer esters...