RE: Carl Goldberg Sukhoi SU-26
Chill.
The plane look good, I have the same plane on the table and was going to make it a gas plane but change my mind also. I have a Power 160 on it, you can use the Power 110. I think 2 5S 3700 mAh in your case will do better than one 10S and will cost you less. You can go with the bigger prop like tianci said the sukhoi is a sport or aerobatic plane so you need more torque than speed.
Fernando