225 /6 at 250HP?

I am not completely concerned with budget at this point, just figuring out what parts I need to start collecting at this point. If it takes me years to collect all the right parts and build the setup I would be fine with that. Right now I am happy enough with the power that I would not mind driving it daily. I would almost bet it is faster than my '96 Impreza that I am currently DD and would still get comparable MPG's to boot. (22-25mpg in the Impreza)

I already have done a GM 4pin Ignition Module swap. As well as the car already has a super six, so it's not a has to be done now kind of thing.

From what I have read it sounds like the 2.2L turbo pistons, 340 valves, Dizzy re-curve, Custom turbo exhaust, T3 turbo, and head porting should point me in the right direction.

I was Kinda wondering, is there any reason that I couldn't build a custom intake as well, using the same principles as the exhaust, just have to do a little more work for the Injector bungs, throttle plate and MAF?

When I get out of school I want to acquire a junk /6 and build a mock engine bay (or the front of a wrecked car) to do all the custom work so I can keep running mine until I'm ready to do the swap.
Is that an insane idea?