You can run a very efficient turbo for your combination with nitrous in the picture. Run a large exhaust housing too, to let the engine breath.
Having a lot of safeties with the nitrous system is very important. I only use it to spool the 91mm turbo with my 224 cubic inch motor. Takes about 1.7 seconds to get up to launch rpm and boost. After the launch, it's all turbo. Saves a lot on the cost of nitrous when you only use a small amount, and small time on the system to spool with.
When I was running the T76, it only took .4 of a second with a much smaller shot (200). The bottle lasted for a long time. 10 passes per bottle, if I remember right. Now with the 91mm, using a 364 shot to spool it in 1.7 seconds, I get 5 passes per bottle.
Nitrous is great stuff. Just try to think of all the scenarios that could get you in trouble and use as many safeties as possible with the stuff.
Of all the systems on my car, the nitrous system has given me no problems what so ever. Just take your time learning the stuff.