You'll find that they will work naturally like ailerons, that is, go in different directions because the servo arms are pointing in opposite directions, and even though the servos revolve in the same direction, the result is opposite movement of the control horns.

Flaps, however, can only be applied (that is, move the control surfaces in the same direction) using the mixing abilities of the transmitter.

I'm afraid you will not be able to do it without a transmitter that gives you flap ability.

All this having been said, you don't really need flaps on an SE as they land extremely slowly already!

What I will say though, is you must not allow the full travel of the ailerons; certainly not for the first few flights, or you will screw the model into the ground! SEs roll faster than you can follow, and inexperience will almost certainly end up hitting that flat hard thing called the ground!

Good luck. The Somethin' Extra is about the best plane you could hope for, to learn aerobatics, and yet the wing section lets you land at ridiculously slow speeds!

-David C.