As in everything the answer is it depends. If they tag Gilmore and sign Z. Brown then the priority has to be WR#2. They will need to use first round pick on a safety in that scenario.
If they let Gilmore and Z. Brown walk, then they should sign 3-4 mid-level FA's to play DB and LB. Then they draft WR in first round.
I'm was in the camp of CG at RT and CK at LT prior to the hip injury. Henderson was just a notch above Mills when healthy. I will take the word of the board and assume the OT draft is weak. But between CG, CK, and SH I would not spend big on another OT.
Lastly, they should try and get Groy back. He was as good as Wood which unfortunately means he probably can get a starting job and starting money elsewhere. Seattle? Wood likely can still play at a high level for a few more years so they can't break the bank on Groy.
However, I would not be shocked if Wood was a salary cap cut and they bring back Groy instead. He is four years younger and not coming off a broken leg.