While I think its unlikely either of the OL you have us signing will hit FA, I think its next to impossible for us to sign both of them. Quality linemen are ALWAYS in demand, just take a look at the top 10 picks from the past few years drafts. Another team will guaranteed open up the pocketbook wider then us to get one of these guys.
As far as the draft, I would like Berry but I don't see it happening unless he posts a poor combine. Berry is a blue chip ballhawk and I think he will go top 5, and I don't see CAR doing poorly enough to end up that high.
The rest of the draft looks pretty solid.