Thanks for your help guys, a few more questions after reading and research
1) For using LiPo 11.1v 15C, in the battery write up it is suggested to change all the wires for at least 16ga, is this necessary for VFC? if so, is there any tutorial of how to do this? There is alot of other things needs to be done "heavy-duty" triggers,MOSFET to re-route the current from the contacts, etc, are there tutorial for these?
NiMh nun-chuk style battery
2) How long/how many shots can a 9.6V 1600mAh battery do?
3) How long/how many shots can a 9.6V 4500mAh battery do?
I want to see what is the delta between the two to see whether it is worth the price jump?