Hi Martin,
great decision. 5 years ago at Christmas I was at a very similar point in my life except I was already 55 years. I quit my job, kept a few board seats, did some consulting. 1 year later, my overland vehicle was ready for the first trip. Now, I have no board seats anymore and no consulting jobs, the world is too interesting and there is so much to do and to see that I have no time for other jobs. Looking back I never regretted my decision for one minute and my wife and I thoroughly enjoy our new life as gypsies. Have fun. The only problem will be to get back to "normal" life if you ever decide to pick up your career again.
But now let us see your build.
Regards Stefan