Just came across this thread today. Not sure where to start, so I'll just go in order of how the thoughts came to me

- First of all, Oahu is one of my all-time fav places. I grew up in FL, but my folks got divorced when I was 10 and my dad moved to Honolulu. Spent 6 weeks there ever summer w my younger bro. Surfed every day at Ala Moana (back in the early 80's to 1990) - best memories ever.
- Second, I have a white 1985 FJ60 that looks exactly like your HJ did before you painted it, altho I have an H55 5spd in it (awesome updgrade if highway travel is a thing for you - prolly not given the island size
- I have a 1HZ sitting on a pallet in my garage + a 1HDT turbo/manifold for a diesel swap on my rig. Came very close to going w a 2H + turbo, but after I spent 2 weeks on safari in Tanzania in a 1HZ powered LC, my mind was made up
- As for AC, I'm a mechanical engineer with a specialty in HVAC design by trade. I have an old BMW cabrio wR12 and my FJ60 w R134A. I get low 30 degree vent temps on those by doing what earlier posters suggested. All new condenser/evap/expansion valve/receiver-drier/and the correct orings and oil for R134A. Once you get it to hold a steady vacuum, you're on your way. Props to you guys for doing that. AC work on vehicles will test your patience. I recommend scoring a manifold gauge on eBay or craigslist. Mine cost less than $50 used and allow you to maintenance your system whenever you want - no renting required.
- I have black powder coated OEM steel wheels w the same tires you do - the chrome loooks great on your rig, black on my white truck looks good.
- my oem bumpers are powder coated black as well
- If you really, really, REALLY want to earn your land cruiser man/woman card, you need to tackle a knuckle rebuild yourself when the time comes. Go slow, take pics, do one side at a time and watch a bunch of youtube first. Sense of accomplishment from doing that is immense. It's messy, but if you go slow it's a 3 bannana job from a technical difficulty perspective
- I am supremely impressed with the headliner work you guys did. THat is a notoriously difficult project and it looks fantastic
- As for your "liquid sunshine/rainbows", I recommend using AquaPel as a glass treatment - you'll never need to use wipers after that - the stuff is spectacular. I'll trade that reco in exchange for your rust removal/treatment product suggestions
- your approach of cleaning and painting everythign along the way for the long-term will serve you really well. That rig landed in the right hands. Great to see.
Mahalo