Before you do anything... Do your HG.
It'll save you tons of time. Do it, get it over with. After that, then think about n2o.
Just my opinion. You seem as if you want to beat up on Civics and Integras. I have a feeling you're gonna spray your 7M and eventually see a little B18 walk right by you. Don't use the spray just for "ricers".
Build the car accordingly to what you would like to accomplish. As we all know, the weak point in our motor is the head. Start your modding by getting rid of that problem. Check for codes and get rid of any. This is the process I am going through right now. I only want 350-400whp. I prefer to get the little things correct. Make sure you have good plugs and wires, working AFM, working TPS, proper igniter and coil pack, Vacuum hoses all in the right place, NO BOOST LEAKS, MHG with ARP's, Correct timing, no exhaust leaks, fresh engine oil, fresh oil filter, new valve cover gaskets so you dont flood your spark plugs, MBC set at 12psi. Port match your intake and exhaust manifolds. When you do your head gasket, send the head out to get refreshed.
These are the things I did. Now I am doing REAL MODS. Apex'i Intake, 3"DDP with integrated eblow, 3" Test pipe, 3" RSR GT2, Dual Maxima Electric fans, AC Delete, Lexus AFM & RC 550's.
With all that said and done, your Supe will be one mean machine. After that you need something to tune with.
I hope my car is pretty quick when I'm done.