Another thing to think of.

If you retract the DT then the recovery would be similar to a deep stall recovery for height requirements. So if you're 1 1/2 stalls high then good. But once it falls lower than that you're commited to a DT landing or it's crash city.

Obviously the stall height is less for very light models with lots of area but it's something to think of.

Also, the lower the angle the more forward "glide" there is. It wouldn't be much but with a large rudder you could point the nose into the wind a little and prevent a small portion of downwind drift.