Ok winter is coming and i want to invest a lot of money into my car !

My goal is to have a complete single borgwarner turbo setup and all what is required with it at the end of the winter.
So i can instal it into my car for the spring ! ( I want to Do track and street )
I wanna do it mostly by myself, I have a garage ,lots of tools,hydraulic lift
My car is a 1989 bnr32 with 120 xxx km(bought it in 2007,kept in a garage from 2008 to 2010(money problem lol), I putted it back on the road spring 2011(joined the army no more money problem LOL)
-Turbo are getting old (runing 1.0 bar on stuck turbo)
-the car is pretty stock
-nismo twin plate clutch
-hawks brake rotor and pads
-yellowjacket coilpacks
-decat pipe
-boost controller/turbo timer
-31/2 exhaust
-I will run a compression test (this week)
Ok i want to get more power, I seek between 400 and 450 hp or maybe a lil more
My questions are:
-Do any of guys have a setup with a Single borgwarner Around this range of hp? (GTRjohn)
-Can a healthy Stock RB handle 400-450 hp ( with minor modification)? (YES)
-What do i need with the Turbo (injector size,wastegate,manifold,dumppipe,ecu,blablabla, etc)? (700cc, 40mm Tial or such, Sixboost mani, PFC (Map), Bigger fuel pump.
-Is there any way to reduce lag? (Small turbo, NOS, Anti-lag etc.)
-Which Borgwarner should i use ? (Dunno)
Any help,experience,discussion will be apreciated !
thx,
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