I agree that its probably a good idea to send out a message to adoptersits not just the potential adoptees who might need a wakeup call The message that you have provided looks pretty good too but you probably ought to include a link to the project and the talk page just for convenience Unfortunately I dont use AWB although I probably ought to request permission to use it I just never got around to it but you should be able to post a request on WPBOTREQ for someone to send this message to everyone  Regarding the template I made I am pretty sure its not possible to have it automatically order people by date who already have the template on their pages which is why we have bots that go around adding the dates to maintenance templates We could do it by hand in perhaps an hour or two though If you think that itd be useful I wouldnt mind doing it over the next few hoursdays Any people who subst the new dated template though will be taken care of automatically