How would you rate my fantasy baseball team?

You have an amazing pitching staff especially if Prior plays really well. He should have RP availibility so if he plays well, slide him in ahead of Wheeler. Your outfield and DH are solid considering the number of players per team. Your infield isn't proven whatsoever. I'd look for Drew, Betimit, and maybe Kendrick to be your best infielders. They're all young and unproven, but for how late you probably got them, they could turn out to be solid picks.