Race has very little impact for a rogue. I think my halfling had starting points put in dex
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Stamina has a horrid conversion for the class so the hps will be minimal. The strength is nice but the 30ish attack wont make much of a dps difference. With sham buffs str is pretty easy to max or at least get close.
Choose the race and starting area you like the most. Your damage will come from the class mechanics and weapons (mainly the primary). Once epiced all rogues fall into the "insane" dept of damage.
Oh and human/barb vision isnt a problem on p99 like it was on live. Even if so the inky mask gives free ultravison so its null. Race leveling penalty might be noticable tho if side-by-side with a halfling.