sleeves:
Don't go more than 84mm. otherwise they just get too thin, and you end up being no stronger than stock sleeves.
That said, some of the most power honda motors out there are 81.5 sleeved blocks.
pistons/rods:
just about anything forged will work. Crower, manley, or pauter rods; CP, wiseco pistons, 9-0.5:1 compression. don't go to 8. too damn low, especially for a street car. your off-boost response will be lame, and your spool time will suffer.
headwork/cams: you can easily hit 350 whp on a stock head. gsr cams are great for boost. i'd worry about this last if you have extra money left. focus on your fuel system and bottom end.
tuning: aem is great, but pricey. hondata s300 is pretty cool, but not too many people are tuning it yet, as its fairly new. hondata s200 is outdated. if you're going to go the chipping route, crome pro is where its at. Either choice will be more than enough to give you a good soild safe tune.
IM: go with a JG/Edlebrock. much better suited to boost than the skunk2.
Bristol: a lot of us are from CT. Hot import nights is lame. don't bring your car there if you go, you have a 1:4 chance of it getting stolen.
with a GT35R, you'll be on your way to 400 whp on pump 93 no problem.... with the right tuning.
you're up in mass, and not too far from us down here in ct, so there's access to some good tuners.