Thats a big plane, that motor you have will never get it off the ground, that almost a 4 foot wing span, use this motor and a 9x5 prop with a 40 amp Turnigy 40 amp esc. for about a 1 to 1 power ratio. your 3 cell 2800mah lipo should be ok if its 20C rated or more, hope that helps, Chellie
http://www.hobbyking.com/hobbyking/s...idProduct=2140
http://www.hobbyking.com/hobbyking/s...idProduct=2165
A. Dame ( members like this guy) 
1 thumbs up!Nice motor, runs pretty smoothly at medium timing, pulls 1050Gr (37oz) and 26A with an APC Thin 9X4.5E on a 3s LiPo.
5 star rating because this motor is defenatly worth the money.