I think as long as you have 80% worked (meaning 16 to 18 out of the 20 frames in 2 10 frame brood chambers) that you should go ahead and put on your honey super. I would think that once the bees get some emerging brood, they will go ahead and store some honey in their's once yours are full. I WOULDN'T add anymore super's until you're sure they're storing for themselves...Just a newbie's thoughts though.