Everyone is different, and it really comes down to (IMO of course) your gear setup, and your prof.
For me, i dump all my starting points into vita, idk if thats needed at low levels, but just in case. Maybe aim for like 60-70 total vita, without sneaky. Just because i like to have life. Then everything else into Int.
For skills, again everyone is different. I like using the warlock Double cast, and power cast. It may just be me, but i think casting builds up abilities faster than melee. And i just like to be able to hit all targets as much as i can, as opposed to soloing with column/row attacks.
But again, its a learning thing. No one persons stat/skill setup will work for everyone, cuz almost everyone plays differently.