I don't want to come off sounding like a know-it-all but, landing the Gee Bee's is not much different than landing a highly wing loaded war bird. I have flown all the Gee Bee's except the Model Y and have never stalled or flipped a plane yet. And I am not bragging as a pilot, because I don't think that I am that exceptional as an RC pilot.

Here are a couple of things I have learned to watch for in flying the Gee Bee Z and R2. First, if you attempt to set the landing approach like most RC'ers, that is a very high last leg and attempt to let the plane float down to the runway, you will run the risk of stalling the aircraft, particularly if you don't have keen depth perception. Just like landing fighter jets, you must be mindful of the glide-path your plane is on. It is better to have to low of a glide-path than too high of one, because you must manage the throttle in landing the Gee Bee.
By throttle management I mean simply this, you attempt to power the plane on the appropriate glide-slope. Most modelers that I have observed attempt to manage the elevator. If their glide-path is too low they add up via the elevator, and if to high, they let the plane float until more up is needed. It is what some would call letting the plane fly you.
I suggest that the vertical axis must be managed by the throttle input and it begins when the plane first enters into the landing pattern. The whole purpose of the landing pattern is to set the plane in the proper altitude for the correct glide-path on final approach. Depending on wind conditions, I attempt to fly the plane a bit beyond stall (flying on the prop) as I through the landing pattern. I decrease throttle to loose altitude at a rate that allows the plane to be at the proper altitude for final approach and continue flying the prop to the ground using very little elevator input at all. If you are fighting the elevator you're hoping for a lucky landing. By flying the prop from the correct glide-path, I can even add a touch of down-elevator to keep the tail up for a pretty two-pointer.
Second, I try using different diameter props looking for good throttle response and braking. I have fond that the larger diameter props help tremendously in landing round cowled airplanes like the Corsair and Gee Bee's. I have no clue about the aerodynamic effects, but this has been my experience in using the larger diameter props on the Gee Bee's.
I would recommend as a training aid, a plane with effective flaps. I had built the Carl Goldberg Super Chipmunk with flaps which taught me alot about powering the plane through the landing, particularly in strong wind conditions.

Just thought I would share my experiences, and I hope it is helpfull. Good luck!