If there is an upgrade to be made, go for it but don't reach and overpay. Also, I'd look to get Gilmore under a long-term contract and possibly front load his a little more than Cordy's.
T.T, I hate to say it as good as he was last year, I think we need to see how he progresses throughout the first half of the season, if it looks like he's continuing to get better, then pull the trigger and sign him to a fair starting QB contract.