Ok bro 1k of sust a week is reasonable dose, you should experinec good gains, be sure and take the shots split up over the week, i.e on 4 spaced out days, it will work better this way as sust has a couple of shorter acting esters in there and to keep levels of those stable you must spread the injections evenly.
My guess, with good diet and training you'lll, put on perhaps 16 -20lbs with that if its a reasonably early cycle i.e you havent done 6-8 previoyus cycles.
bbigman2000.