Drell is tempting, but the crippling lung problems would be a slight issue. Not that it seems to give Thane much of a problem. Does he ever sound out of breath? Is he constantly coughing up damp, unpleasant phlegm? No. Apparently you just drop dead at some point.
Probably human. It would definitely be the easiest to fit into socially. Also male, because I'm kind of used to that. As for affiliation, I'd probably be a bit of both, with a leaning towards paragon. Again, because I'm kind of used to that.
EDIT: Class wise, adept sounds cool. Psychic powers and engineering expertise ftw!
Woo! 400th post!