I can't answer any of your questions, but I do have a couple of suggestions for other things to investigate.
Ever heard of AROS? It's one of the many Amiga offshoot operating systems. It runs on x86 hardware and is compatible—or at least aims to be—with Amiga OS 3.1 at the API level. It also comes in a pre-configured flavour, thanks to Icaros Desktop.
There are also ruminations of an official Amiga netbook coming "soon." No signs of it yet, but I believe AmigaOS 4 has classic Amiga emulation built right in—so that could be an option if you're willing to wait for something that might drop in a month, a year, or five years.
Amiga Forever would probably still be the easiest way to get the old software/games, though.