All very good points.

Just for reference, your pullup radius at 20 gs and 180 mph should be in the ballpark of 114 ft. Here is the equation

R= (V^2)/(g*(n-1)) (V is in ft/s, g is the acceleration due to gravity, or 32.2 ft/s^2, n is the load factor, or g loading).

If you have an idea for a pullup radius (i wouldn't know where to start for your purpose), you can back out the load factor. Good luck.

Paul