With two P-160's, if you keep it light it will go supersonic. You could also add a glow plug to the tail pipe and pump some butane and you will get a cool looking afterburner.

Make sure you wear binoculars just in case youn loos it out of sight. Also, don't break the sound barrier over continetnal US, or you amy get in trouble with the FAA, and the NSA for that matter.

I can give you a good idea for an ROTC project. Build a Great Planes Patriot which is a propeller airplane but looks like a jet, and it can hit 100mph with a good engine. There is a good chance you could actuallt fly this one, although it is still pretty fast. Always seek help of an RC pilot, never a real pilot. It is very different to be seating inside an airplane than outside, the perspective is different. Building a patriot or similar will teach you the basics about airframe and systems installation, and you will not need to ask the Department of Defense for a grant. You can even install a landing gear system that retratcs just like real airplanes.

Good luck, and forget about turbines for your project, unless you only want to design and not build.

Falcon W