ME TOO!!
Ca, I literally just was in the same position as you are now. I ended up with a stock '91 LC two weeks ago. Like you, I started looking at trucks that were already built up like the one you're looking at on Mud. That is a really nice looking truck for sure but what ultimately swayed me from getting an "expo ready" rig was the unknown toll it had already taken and the stress it has already been through. Plus my budget would be wiped out in one fell swoop with one prebuilt and it would be risker, in my opinion, because I wouldn't be able to afford any unforeseen repairs if it needed them. I decided I would incur the future additional costs of building my own rig from a really nice stock LandCruiser. I searched for the nicest stock LC i could find within my budget and was lucky enough to find one for considerably less then I was prepared to spend and used the remaining funds getting it back to new condition (within reason) so it would be very reliable for whatever I chose to do with it. Mine is still a work-in-progress and needs (or wants) some cool ARB stuff mounted to it but for now I have a very safe, reliable and capable family hauler that I'm confident is in top shape, because all the work has been completed while I've owned it these last two weeks.
Keep in mind I'm a total newbie to this whole game but I feel like buying a stock, well-kept, 80-series LC was one of the best purchases of my life... so far! Plus I know my children and wife will be safe if anything ever happens while they're in it (knock on wood). The '91 and '92 are great trucks. You'll probably love whatever one you end up with as long as you go into in with your eyes wide open.