Seems a lot of mocks have either Perryman or Kendricks available at #30 but have GB picking a NT or DT instead.
Based on the way Ted has picked in the past, I'd guess that he's going to see McKinney and a couple of the DTs as solid first round picks and have Perryman and Kendricks graded just slightly lower. I'd also guess that he'd take Kendricks ahead of Perryman. The combine will play a big factor in this, Ted loves athletes on defense.