Stimmer,
Hats off for a job well done. I have a really cool sunlight readable Sharp 6.5" NTSC on my site at EarthMake for $69. It has an RGB input and NTSC timing. This means it should take a lot less bandwidth out of the due because ntsc is only 1.4318 MHz versus 25 MHz for vga. Check it out here:
http://earthmake.com/product/amt-002/
If it's something you want to play with email me at randy at earthlcd com and I'll get you one.
Randy