I personally disagree with the masses. While I DO agree a party buffer would see a great return, you may not want to be the second string to someone else's hero. With large party's, I always felt its best to specialize. Be the party's Wiz/Arcainist/Sorcerer and cover arcane. If you go Soc, you can also be the face, you can even do wizard, and use a couple of traits to switch from CHR to INT for social skills. Pick a role you LIKE playing, and focus on doing it well. With your stats, you can afford to buff a dump stat and occupy a role not normally covered.