i come to this conclusion from having turboed a few 4age's , and many hondas.
a t25 is way to small. will spool up fast as, and start running out of puff early.
a t28 has the same housings as a t25, unless off a gtr which i belive has a t3 exhaust side flange?? (correct me if im wrong)
id definatly go for some sorta t3 on a 4agze. running a ht18 rx7 turbo in a gtst exhaust housing milled out now, and that has stuff all lag and good pull to limimter!
im sure your turbo will be fine for what you want, but im aiming for 300+hp on my setup