What is 'insane' about this again?
I drove my S30 over 18,000 miles in three weeks on at least three separate occasions with an 8, 9, and 10 year old acting as navigator on coast-to-coast quests including invading Canada...all while the navigator was holding a paperback book of "Roadside Americana" meaning, if he wanted to go see it along the way from "Point A to Point B" and it was less than 400 miles one-way out of the way...we went to see it.
World Largest Ball of Twine (it was closed...)
Mt Rushmore / Crazy Horse (where we waited until the goddamned FOG cleared...you don't drive to Mt. Rushmore to NOT see the damned thing!)
On the above note, I would not wish North Dakota or Nebraska on anybody...go through South Dakota...though from the second river in Minnesota to the tree near the Badlands you can bungee your steering wheel and sleep with the hammer down it's damnable boring with the speed limits ridiculously imposed by The Central Scrutinizer...
The entire north shore of Lake Superior.
Again, what was "insane" about this again, once I get over that claim...I can attend to the other particulars. I just gotta get my head wrapped around the "insane part"....
For all the Paranoid Petes out there terrified about mechanical breakdowns...I pray you are not so inclined or it will severely impact your planning almost to the point of not taking it. You have overprovisioned spares, worry about 'type specific' stuff that can't be replaced. EVERYTHING ELSE is improvised. My first trip I had the back of the car packed with spares. The second time it was all on a Harbor Freight Trailer. The third time that trailer was more for what I picked up along the way and didn't want to leave behind....and a huge Coleman packed with ice, drinks, and fresh fruit to keep me and my navigator stocked in our playmate up front. There's only so much you can consume before you either have to empty yourself or FILL the car. Your provisions are more along the lines of what I'd take for below:
Though here is a project you might want to consider: Containerize a 240Z that is Semi-Rally prepped for poor roads and land in the port of Singapore. From there, go on a route to follow the Burma-Thai Death Railway, then turn left and make it across China to Shanghai where you trans-ship again to Shimonoseiki and do a Japan trip, followed by a recontainerization and shipment back stateside to the port of Los Angeles/SanPedro.
Shipping costs there and back are under $3,000.
You are on your own getting customs clearances, driving clearances, permits, etc...
Driving around the USA? That's like spinning doughnuts in your back yard! PFFFT! Lets go on a REAL ADVENTURE! Lhasa is nearby and turning RIGHT is just as easy as turning LEFT in Rangoon, but THAT coast is a lot further away!