Eric,

Now that I see the dimensions of your air frame, a 10x10 prop turning 16k is probably not a good match. Maybe Bob27s on the extreme speed forum can give you his thoughts. The Jetts are not pumped, but I have run a 16 oz tettra bubbleless tank 8" behind the back plate of the Jett 90, and the motor does not sag excessively in long verticals.

Good luck with the project.

Bob R