Well if we are allowed to get fanciful...
Single seat Strikemaster with a Mk16 seat, Williams FJ44-4 blower, HUD, inboard drops, outers stressed for 600 pounds, wired for wingtip 9 Lima, and a single BK27 with ammo on the other side via a crossfeed.
A bit silly perhaps but if you could make it for the same price as a Super Tucano.....who knows.