Are you sure about us having the LB to run a 3-4? Personally I don't think we do. We have depth at the LB spot, but a lot of that depth leaves next year and aside from Compton, Roach, Fisher and Whaley, no one else really has seen the field on the defensive side of the ball.
I don't see Bo or JP changing to a 3-4 defense at least within the next couple of seasons. We need better talent at the defensive end and linebacker spots after the 2012 season to really incorporate the 3-4 system.
Don't forget about Satos and the Juco LB Anderson. You are probably right though, since neither are proven as of yet.