The LVP we would use would be ~6mm thick and have a 20 mil wear layer.

The LVT/LVP I use is around $1.25/sf, but it has the rubber backing and is 4.2MM thick.

That’s all the pros and now the major CON Alright so you get the picture of where the previous investor was in the rehab and now imagine seeing the right side of the house leaning away from the left noticeably a few inches in some sections to where you could see it from the front of the house and you can tell it’s a major structural issue and the fact that roughly 1 inch thick cables/ratchets have been installed (professionally) to support the wall (5-6 of them throughout) potentially the whole house is major cause for concern I just don’t know how much concern and what kind of cost are we talking about?

Eventually she put 1/4 inch thick drywall over the ceiling. 

For uppers, shimming can still be required, such as behind the steel support rail if the wall is horizontally wavy, or at the bottom of the cabinet if the plastic spacer they include isn't thick enough. 

As far as I can tell, it takes quite a bit of leg work and very thick skin to make it from the start.

Zillow and Trulia was nice when it was free, but my last two times I've had to list and pay it only cost me 10 bucks as my field of applicants was thick and qualified.

After the pain free $200k renovation process (sarcasm laid on thick here) which included gutting one of the units, adding a bedroom, bathroom and 305 square feet and upgrading the other unit cosmetically.

Here's why:  it's hard, it's busy, and it (especially in 3cm thickness) communicates a premium feel in the most valuable room of the home. 

Another approach is to find someone who is doing it already, and try to add value to their team, so you can work with somebody already in the thick of it and see how it's done.