The others on this post gave you lots of questions to think about and hopefully you will find your answers. Regarding your D, your H is as you know loosing out, he just doesn't realize it right now. Even now, although I have a much improved R with my children, its plain to see that they would rather be with their mom then me. And that hurts me deeply because of their thinking, but also, I know that their thinking was due to my being absent for a lot of years. I can never get that time back and just thinking about that brings a tears to my eyes. However, I am changing the present and the future about that as I have stated in other posts. Yesterday, was a big breakthrough for me as my D chose to have a Daddy/Daughter day while my Son had a Mommy/Son day. Someday, your H will realize what a poor decision that was to make. Perhaps he learned this from his father.
If you do decide as Was2Sad suggested, and move to Alaska, you will need to do it on Blind Faith that this is the right decision for all parties. And that has to be a hard thing to do. Your H does want you up there with him and that is a positive sign. Are you both still communicating your love for each other?
Anyway, think about what Was2sad said on her post. Don't make a quick decision but think long and hard about it. I feel for you b/c you are a good and smart person and want to do what is right. CY