Oh so many variables there! Is this a .60 cub or a .60 Pylon racer???
The easy choice is to get something like the E-flite power 60 or equivalent and figure the rest out from there.
This is a good tool for playing with battery/prop/motor combos. It will give you thrust, amp draw, watts etc.
http://www.ecalc.ch/motorcalc_e.htm?castle