RE: F-19 concept (the old pear-shaped one)
The jetex plans are free, balsa, free-flight w/ mini rocket motor...
Something like a 9 1/2" wing-span. Not too many parts, either.
They used a flashlight-bulb, painted, for the 'helmeted' pilot...
Looks like they can be adapted for ducted-fan, with appropriate up-scaling and re-contour of the belly.
I've already down-loaded them. Couple of deformations, from photoing paper originals, but looks sturdy.
I think I can up-size and adapt to the Monogram model, easily enough... Going to adapt with some other R/C
pieces, that I think will make it more realistic. Going for a 1/6 scale mini-fighter w/G.I. Joe-type pilot at the con.
Hope to go ahead and link the controls to the apropriate parts of the anatomy, for more realism...
Going for dual electris D-f's and all sorts of stuff. Gonna be tough, for a buget aerobatic semi-fictional bird...