Hi there, I am having a difficult time deciding on which class to play. I like being able to do large amounts of damage, as well as being able to help fellow players. I like being able to 1v1 almost any class and winning I like being able to survive a barrage of damage and piss people off I'm thinking guardian for survivability, but I don't know how well they do for damage. The Shadow interests me because of stealth and all the utilities, I know they do good damage but I am unsure of survivability. Any opinions and experiences would be greatly appreciated.

how early can I solo esseless

I was just wondering, is it possible to go full 10,000 dark side, then change my way and go 10,000 light side? So basically have 10,000 darkside then go 10,000 light side and still have the dark side points?