Read my build thread!
http://www.nsxprime.com/forum/showthread.php?t=124252
You mentioned the sorcery kit replica or authentic, FYi it fits like crap doesn't matter which one you get. You will need to budget in labor, materials, your time to research more etc etc it keeps going... It is not cheap. Unless you are a DIYer it will cost a mass amount of money to get this done correctly regardless of a branded title or clear. Kit authentic 10k plus/replica 3k, labor to do all that depends if your body guy really wants to do the sectioning, re-glass and so on. Your patience will be tested.
Paint: Factor in this and your above 4k plus on the cheap side unless your a DIYer or have someone who really loves you and does it for 2k or less. This also requires material, labor etc etc. Money....
Proper wheels and tires.
Suspension: with the kit you will need coil overs etc unless you find a car with. Do not go 4x4 flame suit on if you post a pic.
Updated front unless you buy one with your looking at anywhere from 4k up to 6500.00 for an update.
Sorcery kit doesn't include a hood: Unless you go a cheap route and order seibon or versus your still paying more money to get this done.
The kit does not fit the OEM rear valence: unless your going half ass it will not look good period. Modification to get this to fit an OEM 02plus which is more money. Your looking at pre 02 so far that doesn't have the valence to match the kit.
Your suggested double din audio and keyless entry. New console modded or bought.
I can keep going but your 45k isn't going to cut it.
I would do as suggested, get one, get it serviced, then see where you stand. You will notice your budget not in reach.
The above doesn't include any other details that you can endure.
IF you don't have patience and the extra mulla to do so I would suggest keeping the car as is.
Fwiw, dreams are nice and your vision is what you see but remember some things are better left as a dream.