Hi Johhnycrash,
I sent you a PM but to reiterate what I said in there, the Exocet is a fantastic jet. I love mine, only thing keeping it from flying right now is lack of an engine. If you can get one and you like the look get it. You do have to build it, but it's an easy build. Conversion from Ducted Fan to turbine wouldn't be hard, it's the same fuse and formers, you'd just have to change the tailpipe. Having said that though, I wouldn't bother with DF, I'd get a PST600R and put it in there, it would have fantastic performance with that. They are very light, mine was 15lbs with a RAM750 and all glassed and painted, I think you could reasonably build it to 13lbs with a smaller engine and monokoted wings and tail, but even at 15lbs with a PST you'd have a wicked package.
Here's what mine looks like now.
Jeremy