There are two ways to start with a stock blaster
1) rape it all at once (porting, head mod, pipe etc.etc.)
2) buy a pipe, ride a while then port it and decided you need a different pipe for the aggressive port and lose money in that area
If you can find a good used pipe, suited for what you plan to do, that is where you need to start.
Reeds dont add power, just a little crisper throttle (although i didnt notice much difference from stock to vforce)
Lets go through what each mod does for you
Pipe: moves the powerband rpm range up or down to better suit your riding requirements
Porting: Lots of power gained by allowing more air in and out of the engine (damn good deal for $150 from KOR)
Head mod: the gas in the chamber fires in a cleaner sense making it a little more efficient when removing exhaust. adds some power
Air box lid off (or CFM box): more air in means a better breathing engine. needed for more mods you add (mainly porting)
Lightened flywheel: Gives you faster revving engine. idk how that help if you know how to ride but apparently it does
Bigger carb: the bigger the more top end power you have, losing a little low end
pre-mix gas: less oil in the 32:1 mixture we use makes it burn a little cleaner and more efficient (stock injection is 18:1 way more than needed)