I am not licensed in your state, so this is for general information only. The time to answer runs for each defendant served. You could move as to one of the defendants separately; they do not get an automatic extension just because there are others who have more time. The reality is though, you would need to then treat that part of the case differently and separately and move the case along different routes for each defendant. Depending on how many people you are dealing with, this could be a task. The out of state persons do not have to respond sooner, their time runs at the 60 days. Good luck to you.
I would agree, generally, with Ms. Levine's response in that each defendant should be considered on an independent basis.
*Disclaimer: This is not legal advice; please do not consider it as such.*