Hi GrowDirector!
OK, it looks like I should play the devil’s advocate then :)…
It is smart approach building something stand alone. But, don’t you think that fitting touch screen is little bit redundant nowadays? Practically everyone has a tablet or touch screen phone. Developers are trending towards blackbox solutions that are wirelessly (through wifi/bluetooth) manageable by other smart personal device with screen. That also allows them to lower the costs.
Disclosure: I’m not affiliated anyhow with those alternative solutions I’ve mentioned or any other 