Loochman,
Do not use spoilers close to the ground unless you are realy experienced. Spoilers cause the aircraft to drop like a rock. Use flaps. However, I don't think you will need them with this aircraft. I have seen this aileron used for flap thing with a Hangar9 P-51 Marie Mustang and the results were not very good. I told the owner I would make actual working flaps in the wing of his P-51 if he wanted. Good luck.