If you take an early game Jungler champion do not power farm though your strong point.

If you take a champion who is really strong in the early game like or gank. You do not need to power farm for your items or breakpoints. You need to gank, counter jungle, and apply general map pressure and presence overall. AFK power farming will lose you the game for sure since you waste your strong point on clearing jungle camps on your own side. Go someone like if you want to just AFK farm until 6.