I like the frame. It appears to use the [limited] space to best advantage.
A sprung front axle needn't be terrible aerodynamically. My lakester has cross-over linkage and coil-over shocks inside the body, leaving just the radius rods out "in the air". [The worst aero part of my front end are the good-sized disc brakes; I'm considering ditching them, then I could run inboard wheel discs.]