In my opinion:
Snorkel Removed and a DNA Stage 1 retainer,
DNA Stage 2 Air Filter
PC-v
This makes the whole bike more responsive, pulls better from low, mid and high revs. You could use the KevMod Fuel modification rather than the PC-v (think of it as a PowerCommander-lite, it does enough but not the same as a PC-v)
An MTC single can
This brought the really low range torque up, the bike can now pull much better from under 2000revs. You'll loose a few Kg's from the rear end of the bike too, makes it easier to pick up!!
KevMod O2 Tuner
This made the bike much less 'lumpy' at low revs, increased the pick up a little, but just made the bike feel much more refined.
The three mods above are what I've done, and the order. If I was to do it again, I'd go for the DNA/KevMode fuel mod and the O2 mod first then the can. The O2 tuner wasn't available when I got the can, which is why I did it the way I did.
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Other ways to change the bike,
HyperPro Progressive Springs kit - Others are available now. The front end can be a little 'wishy-washy' if you push it hard into corners or even on the dirt. The �80 or so for a new spring kit will make the front end much more responsive, it will improve the braking and feel totally different.
Balance it up with a rear progressive spring and the bike changes a little more.
I do believe, if you look in the for sale section there are some progressive front springs for sale at a very reasonable price.......
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Lots of other ways to change the bike;
Bar Riser,
Brush Guards
Wide Pegs (cheapo ones form eBay are pretty good)
Renthal Enduro bars are a good consideration rather than risers, the sweep is different and gives a more natural feel, I think so anyway.
There are loads of ways to use up your spare cash......
