One more bike worth looking at that might be better suited to your needs is the KTM690 Adventure. It has plenty of power, and weighs barely over 315lbs.
I owned a 950, and while the bike was capable, something about wrestling a very heavy expensive bike around in the dirt kept me off a lot of trails I woould have easily ridden on a 690.
The 990 fuel tanks are expensive and can break.
I've seen good riders do amazing things on the 990's, but they bought the bikes to ride hard and were willing to pay the price.