You're getting a lot of solid advice here. Choosing a "Dad job" is a real life decision. Mostly I've seen financial advice here, and that's very important, money does make the world go round. I'm not in fire or lineman work, but I know plenty of both. My bro has been in wildland, mostly AK, for 12 years and he's grown to hate the politics. Several buddies are lineman. Personally I made a totally different decision leaving behind my experiences in carpentry, construction, taxidermy, plumbing, farming and ranching, business ownership, and food and beverage (7yr stint as a bartender manager at a fine dining restaurant). I went to back to medical school, because I felt that after the huge investment, I'd be left with the best "Dad job", that would also feed my habits of hunting and fishing 50-100 days a year. Turns out it was an excellent decision. I've been out of residency 4 years (after 7 years of training), and now I've got the ultimate dad job. Last year I took off 197 days.
Anyways, not getting tied to the govt job is sound advice too. But you can't argue with a pension plan...
As a faithful guy, I'd personally stop and pray about this. Happy to offer more on that if you like.
My linemen buddies are happy, flexible, and great dads and husbands.
Hearing your work ethic and vision, Personally if I did anything besides lineman, I'd consider an electrician apprenticeship and run my own business. In 5 years you could have that looking like about anything. I have no idea what the economy in Georgia looks like, but many areas it's in high demand. Plus you could pursue something further like electrical engineer, I've got a buddy who just finished that, and he's got an amazing gig.
Just some food for thought.