Davis, Holmes, and Ducasse are all expendable. Holmes is the only one that has a role that would be hard to replace. Ducasse could be replaced by Groy/Miller. Davis' spot could be filled with just about any street FA. In fact Lorax would be better served moving to reserve DE when Humber comes back. Holmes is good on ST but with Benjamin and Mathews healing much faster than we all thought, let's face it Holmes is not needed.
If I'm McD I make the cuts, get the pick, and start Groy at RG.