im looking into getting an IFO mk3 and i want some nicad batterys so that i can quick charhe them , my esc can handle up to 16 cells, my charger only charges 6or 7 and i want the thing to hover so could i put 2 6 or 7 cell packs together or would that be to heavy? im using the 300 c gear drive, and i have everything else micro, i want to try this thing out before i buy expensive lithuim batteries, thanks for you helllp