After doing more thinking about the screen size I was wondering could we not just hook the controller board etc up to a bigger LCD screen that has touch capabilities, the connections are pretty standard are they not ?
I have an older 12 inch lcd screen that I could buy a touch screen converter kit for
[Ebay Link Removed] it's around 40 bucks for the touch screen kit.
then I just plug the screen in the board.
3.2" touch screen has a very good price/quality,
it makes hundreds of people using it.
For a big screen you are along.