Don't spend money just for the sake of it(give it to me instead!!), a lot depends on how you drive, no point upgrading stuff if you don't need it, the std brakes can be improved a lot by better pads, and grooved discs, I use EBC yellowstuff myself work perfect from cold as well.
The two most important things are to get the fuel pump rewired and the fan loom changed, both very very easy diy, so that way you don't kill your engine.
I would try to get rides in other cossie's that have different suspension to see what you like best, I love avo coilys myself but a lot find coilys way too hard.
tabetha