When you change wings on a plane like that, just remember you're playing designer/test pilot. You have to be ready to run the risk it will crash on the first flight, and be prepared for some possible wierd flight characteristics. Probably won't happen if it's well thought out and executed, but just a heads up. I've been there, done that, and still haven't graduated from the school of hard knocks.

Like DR.1 said, increasing the size of the ailerons is the best option to start with. It's one of the easiest mods to make, and rather painless. Besides you shouldn't upset the apple cart with it. Just remember, flat bottom airfoils are not the best for aerobatics. If your to that point in your flying and have mastered the basics, then you may want to consider a secondary trainer like the WM Sky Raider Mach II.

Hogflyer.