New to custom roms looking for gaming rom suggestions

I have an Xperia R800i that Im no longer using as a cell phone and would like to turn it into basically a handheld game player, something really geared tword running games well. I have no experience with installing or using roms other than official android updated ones from the manufacturer so any advice on one would be helpful. What I would like ideally is something I could set once and forget. I aim to just install a ton of emulators, maybe a few psp games, listen to music or maybe watch video files/movies. Phone service, Web surfing, apps whatever else I can take or leave.

Ive been looking around and saw this one Xperia NXT Gaming http://forum.xda-developers.com/show....php?t=2173130
That sounds ok to me since I dont care about cellular service or messaging on this anymore, in fact this unit I think has a broken cellular antenna as it likes to keep losing service (is why I have another phone now) But if someone knows of something you think is better Id love to hear it.

Thanks in advance