You need lift-vector thrusters to get and keep it off the ground and control surfaces to guide it through the air. (Something like a Rutan, whittled down might do.  It favors a Rutan plane.)

I'd also suggest some steering, side-slipping jets to maneuver around the tight turns.  The thing will move like a high-speed ground-effect machine like a hovercraft, otherwise.  The 'side-silpping' jets would be good for passing and weaving back and forth with great power and speed. They'd be side-mounted and steerable.

Hope that helps! ^__^ V,,   Looks great so far!

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