Personally I'd put 3 points into Dex, as it is your main skill and the one you use for damage, and 2 into Int. Then I'd spent my first attribute point from leveling on Int, to get 100% succes rate on my buffs, and invest the rest into Dex, with the occasional dip into Con and Spe.
Keep in mind that the natural stat cap is 15. This only counts for attribute stat points. So gear, buffs and the Know-it-All talent can raise it above 15.
Your stat distribution should look something alike this, at level 20: 5 Str, 13-15 DEX, 8 Int, 6-8 Con, 6-8 Spe and 5 Per.
As for your starter skills I suggest Fast Track, Walk in Shadows and either Thunder Jump or Oath of Descecration.
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Tell you what. I'm just going to write a build-guide. Then we can have all the bases covered and it'll be a great topic of discussion for everybody. ;)
