Also, it may be coming in for a landing!
The stab is huge, the tail arm is long, and the wing chord is very narrow. All those things suggest you'll be fine with a balance point very far aft of where we usually balance our planes. Stab incidence looks to be about the same as the wing incidence, so I suspect you'll be fine with it. I agree that the reflex on the ailerons is likely to be helpful.
Is your model going to a have a 190+ inch wingspan? Cool!
Jim