Re: what are some of the best mods to do?
Wait until you have a few tanks of fuel through it, then get a decent tuned pipe and a smaller rear sprocket. I run a 36 tooth and pipe and am quite happy with the better cruising speed and lower revs.
Unless you live in a hilly area, you will love the improvement.
Be aware you will lose acceleration on the low end to gain top speed. The pipe should help make it up by improving torque.
If you want the best of both worlds and have the means, get a jackshaft shifter kit.
In my opinion, a bigger carb on the stock engine is a waste of money. The stock nt works quite well and is easy to tune. Carb upgrades are down the list below porting work.
Spend your cash where it will actually make your bike faster.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.