Help! I'm a Girl and Know Nothing About r/c!!

[the.wert]

drilling a few holes is nothing :P i used to build robots for a high school team, they had cnc and everything, if they were up and running now i'd sell my own conversion kit :P

so which lipo's would work with the Feigao nicely?
and how much better is this 'mega motor' it looks a lot bigger, and is about twice the price..