4cc's in one shot is quite a bit... I'd do at most 3, and you'd need a big syringe for that (need room for aspiration).... The next easiest place to inject, IMO, is the delts.... Then lats, then triceps, then biceps... I'd go with a 1" needle for the bi,tri,delt,lat injections though, not a 1.5"er that's a little long unless you are one huge huge bro.
YUM