I just finished mine up. I have the servos in the stab and it balances between the wing mount bolts and the wing tube without the battery. My rudder servo is at the aft most point on the canopy. So a battery position between the wing tube and firewall will be required. Im using a 5 cell nimh battery.

10lbs 9oz w/ YS ES pipe, and Vinyl graphics

One guy told me he painted and added only 2-3 ounces paint.