It sounds wonderful but that is way, way too much money tied up at just the CB position - especially for your (then) 3rd, 4th and 5th stringers. Factor in Revis' deal that would have to get him here, a future extension for Gilmore.... Yeah, no thank you. Revis on this D would be insane but I highly doubt it would happen.
Retain Hughes, sign some top-level FA O-Linemen and give new contracts to those who need them/can be worked.
I would rather this team isn't throwing an insane amount of money to a CB who several teams will be vying for the services of.
Investment in the TEAM and not anywhere other than QB is a priority. Our defense doesn't desperately need a CB...