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The stock injectors will work with the Vortech FMU, but having an AFC around to help get the A/F right would be nice there.. you'll need a Walbro fuel pump to help flow the extra fuel pressure. With the FMU the injectors will do about 7psi before leaning out.
(not necessary at the 5-7psi level) - the 300zx/sr20det 370cc injectors are plug and play. You could adjust for them with the AFC if you like to support a bit more boost.
that is by far the cheapest route.
I know of a couple guys running blow through setups with the MAF in the cold pipe, and BOV on the hot pipe with minimal problems (none that I know of), but if you run the MAF the traditional way (like turbo240sx was saying) closed loop is a safe bet to keep the idle from sucking. BUT.. if you've got the AFC.. you could try to vent atmospherically.
The JWT route isn't cheap..
$600 for the ECU, plus $250 for injectors, plus walbro 125.. Almost $1000 just for fuel management. DEFINATELY the safe way to do it. But not the cheapest.
I agree with the other guys here that a t25 is MUCH too small. a T28 Would maybe work for you app. I would highly suggest a T3 or T25/3 hybrid of some sort. The KA likes larger turbos.
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