Stop trying to fool AmigaOnes and Pegasos on him. What he should do is:
1. Download Winuae or buy AmigaForever, set up and use that to get back in the game.
2. Try AROS, it´s free and works on his pchardware
3 Either get a A1200 or A500 for games
or
get an A4000 with a CyberstormPPC as it will be abel to both MorphOS and AmigaOS 4( in fact it´s the only thing AOS4 runs on. Assuming that he has the cash :-)
4 or if he want a faster amigaclone wait for AOS4 AmigaOne or get a Pegasos2 if he wants MorphOS
What he shouldn´t do is run out an get a LinuxOne or Pegasosprototype right now.