I'd take Spencer for sure, will require our first round pick I imagine.
I like Aaron Ross a lot and Houston's QB Kolb in the second and third, if either of them last that long, I don't think they will. I also would take K Mason Crosby in the second round depending on what we do at kicker. Josh Brown is the only UFA of significance next offseason. As important as a K is, I wouldn't be upset with using a high draft pick on one like Crosby.
I think Ross could end up replacing Henry a few years down the road AND he can return punts until he does.
Kolb could be a hidden gem as a QB.
Still left to accomplish:
sign OT Winston or G Moore