I'd move forward to something like that with extreme, extreme caution. Land in Alaska is surprisingly expensive - a great many things are very expensive. If you did some web research it might shock you. Too, the wilderness is not particularly forgiving or friendly. People have died trying to do what you're contemplating doing. Read the book about the kid who died doing that. Don't study up on just the success stories.
First of all there are land developers that are not always ethical. For example a friend of mine bought some 'cheap' land in Alaska. When he had it surveyed, he found out that he had purchased a vertical rock cliff, he could not build even a cabin on it or sell it. Land that is cheap may not be cultivatable. It may be flooded for months in spring or it may be forested, one can't always make that into gardens and hay fields. I'd also look at just how much hay is grown and harvested in Alaska and where. Also, water supply is an issue. Wells can't just be drilled anyplace. BEEEEE careful.
I'd find some blogs about people who have done this or are doing it. Usually the blogs will at least have SOME realistic descriptions.
I would also very, very practically, examine the health of each family member. Any heart, circulatory, bone or muscular problems? Breathing problems? Allergies? Any chronic health problems? The wilderness might not be very forgiving of these.
There's something to be said for dreams.
When life is troubling you it is very, very comforting to sit and imagine how you would live out in the wilderness and get away from it all. I think people should have dreams that they work on and think about that make life's ups and downs easier to bear. There's a story about a Viet Nam war veteran who was in a prison camp, and the whole time he was imprisoned, he went through every single step of building a cabin in the woods. He kept his mind on that and it made the conditions around him bearable.
But let's say you really want to go ahead.
I'd suggest instead of resorting to a big move as your first step, to first see if there are remedies for the problems you experience, remedies that are closer to home. Figure out one thing you can improve that's bothering you right now. For example, bothersome neighbors. A lack of a good perimeter fence might be the source of a lot of friction. Of course having a fencing company come out and build a perimeter fence is expensive, but it would cost a third of that or even less, if you buy the raw materials and do it yourself. Plus...it might be an awfully good way to see how you can manage a building project and would increase your property value for when you sell.
I'd suggest a 'dress rehearsal' for your move, and see how each test goes. Build a fence, build a shed, repair your current home. Learn about construction and practice the techniques, learn about alternative energy sources. Perhaps you can put a little solar panel on your shed and get used to working with that. Perhaps you can get building experience volunteering for 'Habitat for Humanity'. Or on your vacation days from work, work around the home and stay there without driving some place. See if it makes you feel restless to stay at home, or if you enjoy 'feathering your nest'.
You might consider a smaller move first. Perhaps you can get away from a lot of bothersome neighbors just by moving to an area where farms and large house properties mix together. I wouldn't suggest a McMansion area, which would also have high taxes and fussy neighbors (what's the famous quote? 'these fields are dirty', yes that's it, lol). But rather an area outside of town where older smaller homes on 1-5 acre properties and farms mix together. You could easily move into an area where people much like yourself have the same interests as you.
If there is some frustrated political beliefs or religious beliefs behind the desire to move away from it all, perhaps those beliefs just need an outlet - working for a church you prefer or getting involved in getting your favorite candidate elected locally. Try it and see if it helps enough.
You might consider trying something like that in the near future, and see if it cools down the frustrations to bearable levels. Then after a few months, a family meeting and a discussion to decide if you want to keep working solutions where you are or make a big move.
I think it's very important to include the family in the decision and have it not be something people feel pressured to go along with. The husband or wife may be sympathetic to one's misery, but when it comes to actually making a move they may not feel quite the same way about it. It's very, very important that each of them really be 'on board' and not feel pressured to agree with the change.
If you're truly depressed and miserable, and everything seems hopeless in the world and the only solution is running away...you might need the help of a doctor, rather than a move to somewhere else. I just mention it as one friend was always miserable in her job and wanting to get away from it all. Finally one day she started having very dark thoughts, things were clearly getting worse and worse in her point of view, and she began packing. For her, moving was a way of getting away from the misery she felt.
The only problem was, where ever she moved, as they say, 'there you are'. She still felt the same misery. She finally after many years of chronic misery reported the symptoms to her doctor. She had a form of depression that simply did not respond to people shouting, 'Cheer up!' or 'Get a new job!' Today she feels a lot better, and the world looks like a far more hopeful place. Amazing how it changed her outlook on the world.
Other people are miserable for a different reason - because they lack some of the skills they need. Without those skills the world can be a very frustrating place. Sometimes it's just a matter of picking up some skills and putting them to use.
In other words, the most important thing is to know exactly what is making you unhappy.