Pick the class you like the most, the most important thing is the end-game and which roll you want to play.
Any class is good if you go with a dps focused build (in most, if not all, cases that means to use Aspect of Assault): at max lvl you get a quest to unlock a second spec and can make another build if you want.
As for the stats, the "minimum brain demand" is to go with Proficiency: it rise your dmg without worry about anything else. Still, gear pieces with higher Vigor (higher lvl), are, in most cases, an upgrade, no matter which other stat they have.
Also, ask in the zone chat to join a guild with xp bonus (20% bonus), that could speed up things.
Try to join the "search party" (ctrl + m) activities as soon as you can, that can help you to lvl up too.
If you want to check builds go to the class section.