About BCC, the logical thing for Poloniex to do would be to credit accounts according to the BTC balance on August 1st 12:20PM.
Personally I only had about 0.5BTC not on order so if they screw us it's not too bad.
I'm still withdrawing my funds 0.73BTC at a time, lending rates are crazy low right now anyway, I think I will wait for a month or two before coming back. And for my Tier2 verification to be approved.