If you can fit a 35mm outrunner, go for 1 of these
http://www.hobbyking.com/hobbyking/s..._(Eq:_AXi_2814or
http://www.hobbyking.com/hobbyking/s...nner_(Eq:_2820 or
http://www.hobbyking.com/hobbyking/s...r_Eq:_AXi_2826.

The 34-42 might be best but depends on how much weight is needed in the nose. Don't forget these planes were designed for heavy brushed motors and nicads. Putting brushless motors and lipo's in usually means lead up front too. The Turnigy Plush and Sentry esc's are better rated than the 1 you selected. I would go with a Plush 60a. For these motors you would need at least a 3s 2200mah of at least 20-30c, but as previously said, bigger would be better on both capacity (mah) and discharge (c rating)

If you can't get the clearance with the wires of the motor, you could try this http://www.hobbyking.com/hobbyking/s...200kv_Inrunner, might help with balance too due to it's weight, as it's closer to an original brushed motor's weight.

Try and keep the kv of the motor low (1000kv mark) as you'll be able to swing a bigger prop which I find better for gliders.