Honestly, play whatever race sounds coolest in your head. ANY race of SK will be fantastic in groups because they have snap agro, good armor and good hit points. I felt like Troll was the coolest SK ever so I rolled it and love it. The 28% more exp required is definitely noticeable...but remember, the level cap will NEVER increase, and you should just have fun as you go along without trying to rush (especially if you don't plan on raiding).
If you want to solo, Troll and Iksar are by and far superior because of the health regen. It will decrease your downtime massively in combination with lifetap spamming. It can save you in a pinch while FD'ed, since you get regen while faking it.
Just make sure you have enough STR to carry your gear, and put the rest in STA. INT is completely unnecessary for anything non-ogre non-troll (arguably any SK at all)
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