realize that if you plan on riding on some trails, your going to want a more mid range motor. below is what i would do if i were you
Rear Swing Arm (+2) - Stock Length, unless your trails are wide, if jumping most people go shorter. I would get a wheelman, Stellar, or JL engineering one. And make sure you go round house carrier, fuck the stock setup
Front A Arms (and bushings?) - +2+1 roll design a arms.
Handlebars - flex bars are awesome, but expensive, whatever your heart desires
Levers - ASV are most popular, but again doesnt matter
Cables - just replacements. just figure out your carb setup first
Clutch/Basket - hinson or mattoon, if you want to upgrade
Front/Rear sprocket - i kept stock for my trail riding
Plastics front/rear - stocks or fullbore
Intake (and rubbers for the carbs, these were GLUED together!) - depends on carbs, billet or good stocks
Carb (kits and/or mods for stock carbs) - i would rock pwk 28's 30's or 33's to try to keep some bottom end to the bike
Engine, bottom end - ported to cylinders, 4 mil hot rods crank, a FAST clutch, billet impeller and gear.
Engine, top end - MX/trail port from FAST, Wildcard, or any sponsor on the site.
Exhaust (Rebuild silencers?) - i would run either PT mids, T5's, Pro circuts, DMC 916's, LRD adjustables.
in reality, the best thing to spend money on is shocks, no point in power if you cant handle it, or get it to the ground.