Kelly,
I know about the possibility of tip stalling while using full span flaps, but since the wing is a constant chord with thick airfoil, it would/should stall near the root first, right?

David, I was hoping to add some lift not only drag - I am familiar with that spoileron mix on some of my 3D prop planes to bring them down in a hurry, but I want to shorten the take off and landing roll mainly for a short field.

Basically I want to save having two more servos in the wing, but if it IS better for the separate flaps and ailerons I can certainly do it.

If thats the route I choose, would 1/3 of the span as aileron and 2/3 as flaps be wise or shoudl there be more aileron than flap? My surfaces are going to be 4" wide and the chord of the wing (including movable surfaces) is 15 inches.

Thanks,
AJC