Well I am no battery pro, but I am not so sure a 3 cell Kokam 1020 is what you want. It is a very low discharge cell, so flying at full throttle may or may not damage the cell, and may or may not give good performance. Although this site is very good, for more experienced hardcore electric guys, go to www.RCGroups.com . However, the motor and ESC should be plenty for 3D. A better battery (say that ten times fast ) would be a 3s E-tec 1200. For your combo, if you are using the "D" gearing, I suggest an 11x6 or 12x4.7 to keep the amps down, and choose whichever gives you better performance. Remember- if something doesn't fly good, don't give up! There are tons of cheap combos out there, that will probably just be drop in replacements. Enjoy your shiny new airplane!

Dan