That sounds like a 12amp ESC and real heavy battery. Would get better power from say around a 1000mah 3s battery. According to the manual, a APC 9X6 "E" prop will pull 10 amps. A nice little lipo will save a lot weight with this little plane.
http://www.hobbypartz.com/98p-20c-800-3s1p.html
http://www.hobbypartz.com/98p-25c-1000-3s1p.html
You would need to change the plug on the battery to match the esc or change the plug on the ESC to match the battery.
ESC
http://www.thundertiger.com/product/8026.html
Motor
http://mms.tiger.tw/upload/2009-9/20099185414.pdf
Plane
http://mms.tiger.tw/upload/upload_fi...5manJE6859.pdf
Buzz.