Not sure I followed all that, but it seems to me it's the ask wall at mintpal that will hold zeitcoin down. The price at cryptsy will roughly mirror that. While it's currently a little cheaper to buy on cryptsy for ltc at current exchange rates, the fees are higher there and the ltc/btc price is pretty volatile. Aiming the pool to buy from mintpal is the right choice imo.
I've got 24 MH/s on Vertcoin at the minute. Equivalent is about 60 MH/s on the multipool, is it worth me switching? My electricity bill is about £85 to £90 a day.
If you have Zeit already, probably yes for a day or 2 , or at least 10Mhs. People still don't believe pool will work, but look what happened to FAC .. up 60% today as more folks realised pool is growing which means more buying power.