doesn't matter too much on Kodi, unless you're streaming something that can get yourself into trouble if you're not using a VPN. Check out the policies of any provider you sign up for. IF possible, get in touch with their support too.
Do you have the roms for the respective games? And the bios? You'll need them to play the games like for instance if you're trying to play a neo-geo game (say, kof98) on your FB Alpha, you'll need Kof98's rom as well as neo-geo bios like 000-lo.lo and others.