Fuel management is going to be your main issue.
megasquirt, throttle body (can't pressurize the stock afm iirc), new injectors, fuel pump, fuel rail, turbo exhaust manifold (is the CT26 a T3 turbo?), down pipe, etc. With that you should be able to get the engine running and tuned. You don't need all of the fuel stuff to get the car running, but you're going to run into issues after a little bit.
The actual engine should take 7psi of boost just fine as long as you are meeting all of the demands that the extra stress puts out (see fuel management). I can't remember who specifically, but someone is/was running 17psi on stock n/a internals. Nissan overbuilt these engines like no other. Eventually, your weak link is going to be the cast pistons, but you aren't going to run into that until you crank the boost up quite a bit.
Search! The info on what is needed is out there
edit: looks like MJLamberson beat me to the punch, but he went about answering your question a little bit differently. You could go with all of the stock l28et stuff, but since you don't have any of it yet I would seriously go with megasquirt. You're going to end up buying it very shortly into your adventure once you get the car running and decide that 7psi isn't enough!