I think that the AOR's need to be replaced much sooner.
We can still get the 280's to sea, but the East Coasts AOR has been in refit for the past year.
If we get the new JSS's then these ships can service as multiuse platforms which will be more beneficial to the CF. From what I understand, depending on what type of replacement is received for the AOR's, they may be able to provide us with Command and Control Platform, Sea-Lift capabilities and a troop transport if required.