hey guy the h23 is a great motor to go with, even tho its not vtec its still a honda motor with a great flowing head design, if i were you i would maybe get some nice cams for the h23 the same specs as maybe the high lobe cam on a vtec cam and it would basically be the same thing, your idle might not be as good, and it may be a little lope to it, the h23 is a very torquey motor, has plenty of potential for boost. dont be fooled by the myths that H series is no good for boost, they do suffer from weak ringlands. As far as your computer goes, Im sure you might have some wiring issues, best advice is to just get a pre-fab wire harness and just plug and play.
If you got the h23 im sure youll like it. I know I have had one, in a 93 civic coupe, I smoked SI's all the time bone stock.