Doesn't that plane have full span ailerons? If it does you are increasing the incidence of the entire wing and will not change the washout by adding flaperons. I do agree to practice with it at a safe altitude to get accustomed to any unforseen quirks that may arise. Unless your A/C is excessivly nose heavy, or has a high wing loading, that design can slow down well for landing without the use of flaps. They do tend to hold their energy well and you have to learn how to slow it down for landing and keep the descent shallow. Getting the idle low enough also makes a huge difference.