I think PowerGod was wondering why you've picked the GPDPocket for your device of choice, when a Raspberry Pi is a 10th of the price, and runs exactly the same (or close enough). Or if you're still thinking a handheld, why not a GPDWin - which actually has gaming controls
I had the gpd pocket a while ago just trying to make some use from it it has a duelboot setup windows 10/linux ubuntu 17.10 a very versatile machine for on the go.