I think I might go with Lambert, but at £4m its hard to flop.
I think Shaw will be fine, even under Moyes we had a lot of the ball, our full backs tend to be going forward more often than backwards. LVG will work well with a player of his age anyway. I'd think Herrera is far more of a risk, I think CM is the hardest position to adapt to in a new league, the dynamics of the league are so different there.