Welcome to the forums, and I'm glad you find CopyTools useful!
Currently, it's not possible to do files on an age basis. However, I was recently working on adding a new copy mode for which this type of match is almost essential and so it will be in a future 2.0 build. It probably won't be the next one as I have to do at least one housekeeping update before then, but it should be present after that.
Thanks again for the feedback.