Why are you running the Wii in composite? It is capable of progressive scan and the component cables for it to run in progressive are not expensive and then you can let the 3808 upconvert the 480P signal to the 720P you need for the projector.

The Wii in 480P is much better.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70