God you guys have no idea what you are talking about. In the 3-4, there is only one interior position the 0 technique nose tackle. That'll be KMac. Kongbo and Phillips will be the 5-techniques aka 3-4 DEs. Their body types are perfect for those roles. They just need to gain 10-15 lbs.
Our outside linebackers in the 3-4 will be Darrell Taylor and Austin Smith. Once again both guys fit better in those roles than they did in the 4-3.
Playing the 3-4 will also allow us to have Bituli and DKjr on the field at the same time as MLBs. Which is ideal considering they are two of the best players on our team.
All in all, I think we have the personnel to play the 3-4 at a high level.