the guys have pretty much said it all.
your engine has a pretty high compression, so u'll need to lower that to be safe or you wont be able to run much boost. to do this, u can get lower compression pistons, thicker head gasket, and a decompression plate.
since u got vtec, it is harder to tune since there's vtec and turbo overlap, so tuning is very important (if u dont wanna disable vtec). but with the right expertise in tuning (i cant stress enogh how important tuning is, it can make or break a turbo system, badly tuned one will either blow ur engine or ur turbo) with vtec, u'll have a killer of a car.
oh yeah, a T3/T4 is great for our car for the best balance between best hp and lag. kicks in i've heard around 3000-3200 rpms.
an intercooler is also a good idea, as is 3" turbo back exhaust with a high flow cat.
if u need more help, PM me, i got a turbo lude.