Nitro
Have you seen the movie Stealth? A design based on the Northrop Grumman Switchblade the FA-37 Talon was fabricated. Cool stuff. Or the X-29 I have the drawing on my site for X-29 this might help, it is similar to yours.
I have some other Ideas that might tweak your fancy.
http://betterfly.ca/BetterFly/RC_concepts.htm