A very thick padding of underlayment will help too with the uneveness. 

Vision, Leadership, Time, Energy, Expertise, Discipline, Diplomacy, Thick skin and Patience  2.

I know there is a lot of information out there but if someone can point me to a simple step wise guidance as to what to look for from site selection (like what questions to ask etc) all the way to get into thick of actual development, I will be greatly obliged.

Being self-employed in real estate investing does seem to require a thick skin.

Floating floors are great to keep up front cost down because you normally don't need sub floors but if you are looking for sustainability and extended use you can't beat a good quality 3-4mm thick LVP with an aluminum oxide scratch resistant finish. 

Cover that slope with thick plastic and put rocks over the plastic.

You'll be right there in the thick of everything while the building is happening.

What you have to do is find people in those countries directly (a lot of people hire people from the Philippines because their English is good, currency exchange rate is favorable to people in the States, and their accent is not as thick as people from other countries).

@James Meyer being a model home essentially has no effect on value over the long term, the upgrades count for something but really only if they are significant ex: nobody cares if you got the thick or thin countertops in the bathroom. 

Anything more than than you need concrete patch. read the bags for the thickness they allow and realize that you will need time for them to properly cure and get the moisture out before laying any floor floating or otherwise ; to avoid either mold developing or the moisture breaking the bond of the glue.