Nitrous in a 5 speed car

[Mustang_GT_90]

Ok guys here's a question but I think I might allready know what everyone is going to say. I'm planning on spraying my car 100 horse with a wet nitrous kit. I know that's not that much but my car is a 5 speed. I was wondering how everyone is doing this, how they trigger the nitrous, how they shut it off to shift or even if you do, and what kind of problems I might run into with the 5 speed and a wet kit.
I sprayed my last car 75 off the line with an NOS dry kit several times and it was a 5 speed, when I ran it I just held it to the floor and powershifted the hell out of it, never had any problems. With this one I'm kind of wondering about the wet kit, being that the fuel is coming in through the upper I'm wondering for some reason if I do let off of it to shift if the soleniods kicking in and out are going to cause puddling the in the upper or maybe a nitrous backfire.
I thought about maybe just a window switch to allow it to spray within a certian RPM range and just shift right above it after the spray cuts out but I'd say that's gonna kill the ET. I'm kind of paranoid about spraying this car and relying on just speed shifting though.
Thanks for any info.