ok... instead of telling you how or what YOU should spend YOUR money on... i'll answer the question asked..... it's obvious that you know what you want to spend your money on and i'm sure you don't want to hear other interweb peeps telling you not to spend money on your car.. so here goes....

new radaitor $130 :bigok: functional

mugen wheel n knob $300+ :down: not in the slightest bit functional and a waste of money IMO

WW Kit $600 :down: same as the wheel and know IMO

CF VIS Hood $450 :bigok: weight reduction is good mmmkay

Paint Job/body work (no rust or dents) $2000+? find a local body shop and ask the guy that runs it if you can help out around the shop and learn the ins and outs of body work. if the guy says no, find another shop.. bondo(or fiberglass resin, whichever you prefer) and sandpaper are fairly inexpensive. the most fun of fixing up a car is doing the work yourself... at least it is for me. having a car that's already prepped for paint sprayed isn't that expensive.

Insurance next month for 6 months $700 :bigok: that's given.....

since it is a 91, you may want to consider either a rebuild or swap of the engine. i'm sure the engine has about a grip of miles on it and if you're planning on keeping it for a long time you're gonna want it to stay reliable. i know it's a honda and honda's are reliable cars, but shit starts happening to cars with a lot of miles.. that's just the nature of the beast.

also.. you didn't list your current mods.... that would help.