I left for BMQ at the age of 29. I'm now a LS and have POs that are younger than me (sometimes), but you'd be surprised how much the "age" thing is really a non-factor for most people. I have a Junior Tech who is old enough to be my father (the math was hard, but high-school parents are a thing, apparently) and he has no issue with people younger than him teaching him how to do his job. It's all about your perception, and whether you choose to make your age a weakness or a strength. I chose to use my life experiences to my advantage, and found ways to do the same jobs as the younger guys, but with a little more creativity in the execution. End result is the same, but the execution is different. In the end, as long as you are physically and intellectually able to do the job, there is no reason you should not attempt.
Good luck, and hope it all works out for you.
Cheers,
Rev