Well assuming your projections are accurate:
Hannity: Don't like his vL, but when he pitches he should be dominate vs Righties, and perhaps average vs Lefties. His low ST/DU, plus his struggles vs lefties kind of projects him as a solid setup man that can go multiple innings b/w rests w/ a high pull count if there's a great lefty at the plate.
Contreras: Solid middle of rotation guy. You don't want him as your ace, but if he's your #4, you're in solid shape. Not bad for the end of the 1st round.
Bailey: I know his ST/DU is low, but a great collection of pitches. Great value at 36, could start, but might be better out of the pen where he could go multiple innings a couple of days in a row before taking a day or 2 off to get back to 100%. Then in the playoffs when you get a bunch of days off, he'd make a very solid starter.
Hubbard: Hate the control. he's solid everywhere else, just not solid enough to overcome a sub 50 control rating. Could be a mop up man or long B. Not bad value for the spot, might be able to flip him for something else or as part of a package to a coach more willing to deal w/ the low control, or poor AS and don't realize the control will be that low.
Grant: Long man, again not bad for the #60 spot in the draft.
Overall, I'd give you about a B. You didn't get a legit #1, but those are tough to come by after the top 5 or 10 in most drafts. You probably left some solid bats off the table, or guys that could play a more important role in some cases, by going all pitching, but that's tough to garuntee w/o individually selecting each pick. Contrares & Bailey should be key cogs in your future pitching staff, the others can fill bullpen roles, or provide some depth in AAA in case of an injury or as trade bait.