My Little Brother's Combo

[thom1301]

Okay, long story short, my little brother has been building up his 2g GST for awhile, and I think he's just a few parts/details away from a really fast combo. The problem is, I don't know what he needs.

Here's what he's got so far:
Shep tranny w/Quaife
Forged bottom end
ported head/1mm oversize valves
272 intake/exhaust cams
ported evo III exhaust manifold
60-trim, 2-1/2 to 3-in downpipe/exhaust
front mount, 2-1/2-inch intercooler piping
880 injectors, aeromotive FPR, 255 pump
He has an Apexi, EGT, and wideband to tune it, but doesn't know how to use it correctly.
According to him it's running 8.8:1 A/F ratio, which is obviously way too rich.

Potential problems I see:
Does he JUST need to get it tuned and it'll be decent/fun?
880s too big for his combo?
Should he look into DSM Link or an AEM?
Is the stock 2g MAF, TB, and/or intake manifold really holding him back?
What else is holding him back?

Thanks for any/all educated replies.