Lot's to consider. I have some life experience related to your comments that I'll share. Maybe it will be helpful, and maybe not.
Before I start I'll tell you I'm now 55 years old, been married 35 years, raised two great kids and moved 900 miles from home when I was 39 years old and our kids were teenagers.
One thing I have learned about myself is regardless of the job, I seem to get itchy feet after having the same job for 8-10 years. After reflecting back on this, I believe I am like this for the following reasons:
A) I'm a life long learner and get bored if I'm not being exposed to and learning new and exciting
things.
B) I love adventure. When I was young I thought this just applied to my hunts - but I've come to realize
adventure comes in many forms - careers/moves can be an adventure.
When you live close to "home", you can go on vacation to fun and exciting places. When you live away from home and you have kids, you spend 1-2 weeks of your vacation per year going back home so your kids know who their grandparents are.
You talk a lot about $$ and the amount of money you put toward your pension. Fair comment. I don't have a pension, but your salary and mine are currently within 10% of each other. I've been putting 20% of my income into various retirement accounts for 20 years and need to go another 6 years before I'm relatively sure I'll have enough to retire at 61. My point is just because you don't have a pension doesn't mean you won't be putting some of your income into retirement.
Over my career I've had 250k W2's and 60k W2's. For me it seems like once you get past 80k the rest doesn't matter so much if your priorities are straight. I've also lived in 3000 sq foot beautiful houses and currently live in my father-in-laws 50 year old 900 sq ft house (my wife and I are caring for him). I'm just as happy in the 900 sq foot house.
I think most folks who move long distances tend to romanticize about how nice it will be somewhere else. I know I have. Don't get me wrong, I live in Michigan right now and may move to Wyoming myself once my father-in-law passes - but never the less, we romanticize about how great it will be. Moving may be a good move for you, but it will have it's issues too. It just will. Life always throws us curve balls and stress no matter where we live.
If you are getting restless in your current situation, I think you need to pay attention to that and come up with a plan. If you don't, you will eventually become miserable. I wish you and your family the best as you flesh out what your next adventure looks like. As you do, stay true to what you are passionate about. Doing a job just to collect a paycheck never works out for adventurous people. Part of being happy and fulfilled is doing what we are passionate about.