I think Creamer is definitely ready physically. He just needs to get some position coaching. Obviously that means that you gotta find his position.
The little bit of HS tape out there for Creamer indicates to me anyway that he looks to be a better offensive player. With about no TEs able to play this spring, I would put out there in a Croom like role. Practice him at the big WR and get him some reps at TE/HB.
Wolfe is a more typical TE, while Helm and Creamer if he is there, are athletic receiving TEs, who can also play some WR. You never know how a player's body is going to develop.
Henderson needs to lift, and eat, and lift and eat some more. He should focus on that this spring.