RE: HELP with electrics.
UM,
The motor, ESC and batteries that would be needed to fly a small P-51 like that, assuming standard balsa construction, would cost over $300. Extra batteries would be additional as would a Lipo charger.
YIKES....you sure you want an electric war bird?
If this is your first plane, STOP!! Get some help, and don't try to fly it by yourself.