FSW (Forward Swept Wings) on a glider
Now I've been researching the FSW theory for about a year now. The main thing you seem to have to watch out for is a twisting motion chordwise. Now this only seems to happen at higher speeds. The Germans tried to fix it on the Ju-287 in WWII by moving the engine postions around.
Just make sure you add about another 25%-30% af area on the Vertical tail.
Now this is all theory as my first prototype .40 powered FSW suffered from brain fade on the part of the designer (that would be me) as I miscalculated the nose moment and ended up about 3.5" too short. Fixed that by making an engine box only to discover the aileron geometry was out of whack due to error on the part of the builder (that would be me again). But prototype #2 is on the drawing board, so when my shop is ready this fall I'll start on that one.