The 2826 is more then enough to power that size plane. I have some real life numbers for it. With a 13 x 8 APCE on 3S2P pack it puts out 410 watts at 41 amps at 7600 rpm.
I am using a mega 22/20/2 geared 3.18 x 1 in a similar size plane. Output with a 12 x 8 APCE on 3S2P pack is 450 watts at 45 amps at 7900 rpm.
I also am using on Orbit 15\18 in a 61 oz AUW sport plane. With a 12 x 8 APCE prop on 3S2P pack that putsout 430 watts at 42 amps and 7700 rpm.
They all fly very well and fit my flying style perfectly.