Since I started this thread...
I have moved on from sweating the mpg, my thinking is fleshing out what is important. I also think it may well be another two years before I begin. But this whole idea has transformed my life already. I am taking action now to be ready.
I have never had money, but I have had a good life, and I currently have a great life. When pops passes I will inherit a nice sum of money which I will have to manage to last me until I kick most likely in my 90's. I won't be rich, but it should be enough, and this lifestyle does not have to be expensive.
Regarding a rig I seem to be enamored of Four Wheel Campers. I may be wrong, but I think I will find out the hard way. If I were shopping today here are two picks available right now I could put together.
'01 F250 7.3L Diesel
https://slo.craigslist.org/ctd/d/sacramento-2001-ford-f250-73l-power/7008212741.html
2007 FWC Hawk camper
https://reno.craigslist.org/rvs/d/reno-2007-four-wheel-camper-hawk/7000655670.html
I still might build something under an aluminum cap, but as my thinking develops I have fewer doubts about what I am doing and that seems to not be the best way for me to go. I seriously see me living almost full time in whatever I get.
My intention is to have a rig that could also tow a nice caravan. I would have a lot of fun in the rig by myself, but I could offer my NZ nieces and nephews to come join me for a vacay in the wilderness where they ride with me in the super cab, live in the comfy caravan with kids. A month rental of a really swish caravan would run $3,000. Yeah - add insurance and campsite fees it could run another $1000, maybe. But that would be a cheap month of holiday for a family of 3 or 4, and an absolute blast. One nephew is a really good fisherman - I would love to get him over here. His wife would want the comfy RV. Another nephew married a Canadian, has two kids, and they have a lot of travel history. It would be all good with them. My brother and his wife already spend 5 months a year living in a caravan - we could do 5 months here in the US if they could leave their properties. Towing capacity gives me an adjustable spare bedroom in the wilderness for visitors. I gotta have it.
Part of my plan is to get some hiking in. That means being fit and healthy. I went for a full physical explaining my intention (all good) and I have started hiking. I have myself some new backpacking gear, some of it given to me by friends. The fact is everyone who knows me loves the idea of me doing this. My big question is a weak ankle - I want to see what I can do physically before I decide what I will tackle. But I do love hiking. I could even see me doing some of the great hikes, except those might be a bit crowded for my tastes.
I have bookmarked an inflatable canoe (Sea Eagle, discovered here on this forum) as I like the idea of maybe paddling off the beaten path as an option.
I have interviewed a financial planner. I know nothing about investing, or how to make money last. I am good at living cheaply, my needs are simple, but I don't know what will come my way and if it happened today I don't want to feel rushed by everything. In the interview I explained what I wanted to do and he was very enthusiastic. When pops passes we will have a serious planning session before I start shopping.
I have also started going though the garage and figuring out where all my tools and stuff will go. I intend to get rid of most of it. If this adventure doesn't happen I won't miss it anyway. I have been lazy about shedding, and it is time.
So. I can't show nice pictures of my "build" but I am building in all the ways I can. And I am sure my plans will change. What I do not see changing is my goal. I only heard about this life in September, discovered Bob's videos, and am having a lot of fun working out what it all means, and how to put it all together.