I don't see why you can't build the flaps and lock them in place. I have a Senorita to and I'm almost done with an aileron wing for it. I made 1 1/2 inch ailerons for it and I'm using dual ailerons servos so I can use flaperons. Flaps or flaperons certainly aren't necessary, but I want to know how slow this baby can go!!! lol. Good luck with it, I'm sure you'll love it. Dan