Negative, completely different kit/setup.
You want a universal wet kit made for a fuel injected car, not a carby. You want something like this:
http://www.holley.com/05130NOS.asp
It is a simple wet kit that is a simple bolt in job, put in the corect size jets and you are done. You don't need to tune for the nitrous unless you are trying to get every bit of performance out of it. Just make sure that the jets you are using are not going to cause the car to ping on the tune that is in the car. You can run dual maps but that is more hassel and not needed for what you want.
You are a bit confused by it all because you have been looking at carby kits (hence your points about retarding the timing and injecting the fuel into the plenum).
Read through these instructions so you get a good understanding of how a universal wet kit works in a EFI car:
http://www.holley.com/data/Products/Technical/199R10295.pdf
However if you want the good stuff, these kits are ment to be some of the best.
http://www.noswizard.com/
Start doing some research on here regarding pulsoids.
http://forum.nitrous-advice.org/
There is a lot to it and I can give you as much help as what I have researched and experienced, but my knowledge is also limited compared to some of the guys on here that have been running nitrous for years.
Unfortunately there is a lot of people on here that havn't had experience with it and have been fed second hand knowledge which is incorrect, so you will most likely hear a lot of negative comments regarding nitrous.
Also you will not need to install the microswitch on the throttle body, the Vipec can switch the solenoids on electronically through a voltage signal from the TPS instead of a mechanical microswitch detecting wide open throttle. This also allows you to select which gears are locked out for the nitrous and what rpm the nitrous activates and deactivates. (Hitting a rev limiter with nitrous engaged is one of the worst things you can do so the rpm limits are VERY handy!).
If you do your research, aren't greedy with running big jets and have a few safety precuations installed to make it run safely you will get good use out of it and won't experience some of the horrors which are assosiated with nitrous.
Good luck with it