I can't detach
Wesley from the irritating
Star Trek character, and it has a certain whining quality to it. I vastly prefer West, which I think is pretty nice and can stand on it's own or be short for
Weston (I don't care for
Westley either). Also, I'm pretty sure
David Duchovny's daughter is named West. Don't know if that helps or hurts your opinion of the name.