I'd play a 79/74 2B in a heartbeat to get that offense at 2B. And I value defense quite a bit. I think people are overstating the difference between say an 80/80 at 2B and a 79/74. I think the difference would be negligible, and getting that bat at 2B is huge.
That said, if a guy projects to 79/74, there's a better than average chance he doesn't get there. And the lower he tops out, the less liklihood he can play a 2B. At #2, I'm hoping for more than a good bat that "might" be able to play 2B or a corner OF that isn't HOF-potential at the plate.
In other words, I'd hope for better than either of those guys at #2. At #2, I'd either take a stud pitcher or a SS (a real SS) that can hit. If neither was available, I'd take the best player that was doubtful for signing and hope he doesn't and try again next season.
In your case, I'd take the stud pitcher. If he signs, great. If not, they'll most likely be better options in next season's draft because I don't think either of those position players are what you hope for at #2.