I have always stopped vaccines for my seniors, even rabies since by their teens they have immunity if they have been regularly vaccinated throughout their lives. AZ doesn’t accept titers but my vet (who supports stopping the vaccines) writes a letter to have on file with the county. I *think* this means if my dog was exposed he could be quarantined at home, but it never came up. All that said there really isn’t any reason not to do necessary vaccines on a healthy senior. Likewise for dentals, I would address any issues, but probably skip a routine cleaning. When Conner needed a dental at 12.5 I took him to a specialty vet and he had his own anesthesiologist. Expensive, but worth it!
Blood work and a good physical exam should do it unless there are any specific issues you are concerned about. Congratulation on Logan reaching a milestone