Thoughts on employment
Tractorguy, I have worked for myself for over 40 years, and also retired from the military's reserve component after service in Vietnam. The benefits from military retirement, as well as the VA, are fantastic. I don't know what I would have done if I'd not had the military benefits. I see a "state job" as very similar to the benefits I enjoy.
"...all the benefits identical to a state worker, insurance, paid time off, pension and all" should be a strong factor in your taking the school job. In addition, you will probably be afforded the opportunity to go to school tuition-free within your system, if not to any state-operated college or university in your state. If you decide to also operate your own equipment-service business after school and on weekends, you'll probably have the pick of your students to work for you as needed.
Governments rarely lay workers off, and usually find other jobs for those injured on the job. I don't know how old you are, but I would see this job as an opportunity for you to either work your way up in the system or to transfer to an even better job elsewhere in time to come.
I find that teachers are usually highly organized and have excellent public speaking skills, which if you have not already, you will quickly attain. A friend, a full-colonel in the air-guard, just retired as a public school teacher; I rarely saw him without his calendar book. If you don't already, structure your schedule out a month in advance, and then the fill-in opportunities will find their own blocks of time in your schedule.
And as do the paratroopers, practice backwards planning (I gather and stuff the parachute into its bag, I collapse the parachute, I stand up, I finish the proper landing fall, I hit on my thigh and roll, I have flexed my legs before impact, I am not looking at the ground, my risers are all straight, my shroud check found all okay, etc., etc., PS I wasn't a jumper -- I just dropped the jumpers). But plan your time backwards from the end of the school term (semester, I would guess).
And let us hear how it goes.
Neill