My situation is almost identical to yours, with the exception that I'm three years younger. To me it all boils down to a cost-benefit analysis, which can be performed only on an individual level. Is it worth the risk? I've always been concerned when taking vaccines that I'll be exposing myself to some unknown condition or pathogen while my immune system is diverted toward working on building immunity to whatever vaccine I've taken. It's the law of unintended consequences, which the medical profession doesn't seem willing to take into account. My policy has always been never to introduce foreign substances into my bloodstream unless there is a clear and compelling benefit to be gained, and that benefit clearly outweighs the risk.
Your entire reply was very good, and to the point!