It sounds like the move is to please your DH? Think very carefully OP, you don’t sound very onboard with it, doubts about the house, giving up your job, rural living, that is one massive lifestyle change.
I am meaning this kindly, a move may not solve DH MH issues, especially if you are unhappy, often the dream doesn’t always live up to the reality.
what would the plan be, if you tried it and didn’t like it, could you move back, what if you couldn’t get a job, with a comparable salary?
we moved from a city to a semi rural location when our DS’ were babies, DH was ready for the move, it enabled us to buy a very large family home, but I made it clear from the start if I was unhappy I would want to move again. We settled were very happy there for 18 years, but there was literally nothing there for the boys once they grew up.
We relocated just 18mths ago, it has been a big change for us and has really improved our lives having lived semi rural, for 18 years, we now live in a different city, best thing we have done, really convenient, I know I could never move back. I like having lots of buses, anything I want delivered, shop around the corner etc. my circumstances are very different now though, as my disability made the move necessary.
Good luck OP, I hope whatever you decide works out well for you.