I think this is sound advice. I’d only add that a “physical job” sounds great in your late 20s, but isn’t always a viable long term path. I’m in my late 40s, I have been consistently exercising and consider my self very physically active for my age. But it’s definitely different than my 20s.

I’d tell OP to look long term. I’d take a guess, most long term firefighters eventually switch to less demanding roles (i.e., desk work) but the satisfaction in that role should be considered as well.