Don't do anything until you are sure that all impervious surface water is discharged downhill from the house.

A budget and plan for major overhauls and re-surfacing.

The allure ultra that I just installed required a very flat surface.  

I'm almost finished house hacking a triplex and the next property will surface this spring.

Downtown and to the north as far as the hard surface road goes, maybe 2 miles at the time, along the Oceanside beach. 

It's a smooth surface (made to varying heights) that you lay before these thin resilient flooring styles that was most likely laid to raise that level of flooring up to the same height as your living room floor... you'll probably have better luck removing that layer with the linoleum intact on top. 

Learn to inspect and spot signs of key things like roof, foundation, termite or water damage from surface inspections.

Remediation companies are great if it is your intention to salvage the majority of the interior surfaces but their services come at a price.

I've noticed that buyers don't really mind what solid surface countertop options you use as long as it is new and clean.   

Another thought, the floors are also really slanted, and click floors need a relatively flat surface.