Before you cut out your own model go to
www.bphobbies.com and look at their flat foam airplanes. I've had a couple of their Extras they are great. For $15.00 you get a kit all cut out ready to go, with carbon fiber tubes and control rods. While you are there look at the BL motors and ESC. I power my Extra with one of their 200 watt BL motors and a 20 amp speed control. I finish them with colored felt markers; come out very nice, cheap and fly fantastic. For $15.00 it just is'nt worth the trouble to cut your own. Their Enerland batteries are a good value too, 1200-1500 MAH would be fine for what you are building.
Good luck,
Oscar