If you're a Land Cruiser guy, there is nothing more satisfying than owning a 70 series. They're peak Land Cruiser-ness. I've now owned 7 Cruisers, two 70 series and currently daily drive my 87 JDM BJ74 and I love it so, so much.
I do wonder if a non-USDM Cruiser is the right fit for you. I feel like there are a few things someone needs to accept about a non-US Cruiser.
First is that they're old as f*** since there's a 25 year import law, which speaks to reliability. Even though they age super well, they're old. Even with a ton of work and restoration, they're no longer factory fresh. I've put a lot of work into mine and it's in great shape for an unrestored 34 year old vehicle, I'd happily hop in it and drive to wherever, but occasionally my decision to drive this weird, old JDM 4x4 bites me in the ass. You can't just walk in to Autozone in a pinch and grab the parts that break (the parts that don't break during your daily drive, driveline, ect is shared across multiple platforms and easier to deal with). You've got to call any number of awesome Land Cruiser specialists who lurk around here (I'm a huge fan of
@cruiseroutfit and plug them every chance I get), pay whatever they're asking and wait for parts to show up. For example: my current gremlin is a sticky starter. They're not readily available for my 13B-T and I'm putting it off as long as possible since the ones I can get are stupid expensive. I can't just go grab a reman from my local parts store and exchange them. I had the same thing with my radiator a few months ago. Old truck stuff. In order to make your life easier your only option is an HZJ73/74 since the awesome 1HZ is still in production. The 13B-T in my truck was a short production tractor motor and occasionally you've got to get creative to replace those little parts that go bad.
Safety? Well.... safe depends on how you define safe. My BJ74 is safe, I put my kid in it and we drive everywhere (I had to install a Euro spec roll bar and rear seat belts), but you need to know how to drive and what you're driving. 70 series were never brought to the US specifically because Toyota didn't think fat, lazy Americans cared enough about a rough and ready 4x4 to justify them bringing the platform up to code. Americans wanted cup holders and a smooth ride- enter the 80 Series in 1991 (which I have owned and they're also great). I don't know exactly when but they didn't start to come with any sort of ABS/VSS/Airbags was somewhere in the 2000s. Safety wise, the 25 year old Cruisers we can get are super similar to the 60 series we got in the 80s.
Off Roading features- The entire truck is an off-roading feature, sorry couldn't resist
Your biggest limitation is your LHD requirement. This is going to be your dream killer. Because of how the Japanese are with their cars, a clean RHD JDM rig is still easy to find. They don't need 4x4s to live and they don't have high freeway speed limits, vehicles tend to be well cared for and aren't abused as much (of course their are exceptions). Land Cruiser ownership is more of a vanity thing and they get all of the high trim goodies, some specific to the Japanese market. The few LHD markets out there either use their 4x4s for their daily lives, or they live in harsh winters. From what I've seen the European rigs didn't generally get some of the cool options the JDM rigs got. Either way you'll pay a huge premium for a LHD rig that isn't as nice of what you can find out of Japan. As previously stated above, don't even bother with something from South America. Same goes from Africa or Australia. They tend to be clapped.
If I were you, and I had your requirements, I'd start trying to find a clean FZJ80 before they're all gone. Safe, and despite their additional amenities they're bombproof, capable and super reliable.