Don't forget Incognito. He is a FA after the season and needs to be a priority assuming a reasonable contract.
Extending Gilmore would make a lot of sense and free up some cap space for next season.
Glenn shouldn't break the bank and would be nice to retain, but I expect him to hit free agency. Once that happens he's likely gone as some LT needy team will overpay. The Bills probably missed their opportunity with him.
Woods would be nice to extend as well. He's not a top talent but he keeps his mouth shut, works hard and (typically) can be counted on to give maximum effort and know his assignment. He's a WR you can start if you need to, but is best as a rotational guy. Teams need guys like him on the roster. If he's willing to take a contract commensurate with that, then sign him to it.
Bradham is almost certainly gone. He hasn't excelled in Ryan's scheme and cap space will be tight. Some team will give him a chance and a decent payday based on last year's performance.