I got future walls done with wood panels as well as paint and wallpaper put up.What was the outcome?

The has been a lot of cases where the rehab was done to make it look beautiful to the buyer but everything behind the walls or where eyes cannot reach is done incorrectly.Even big new home builders do this kind of shady business where it comes to a point it is necessary to order inspection for new home builds in US .

Is there any place within the unit where you could add a through-the-wall A/C unit such as a ductless system or a window unit in a wall sleeve? 

Remember, once the foundation is fixed (and it never is), you have to fix the superstructure items that were thrown out of wack, starting with load-bearing walls.  

Unless this is a wall oven, most ranges are a standard size.

How are the foundation walls, basement/crawlspace framing, HVAC/heating & cooling, roof, windows, elec.?

My plan is to use the LLC to acquire properties and to be the employer for the property manager when I actually acquire some walls and a roof besides my own personal home.

I think you are mostly correct but here are some examples I have of going the opposite direction:I was removing a load bearing wall.  

Seconding @Jaron Walling.

Why would you give them free rent with they still have full access and use to the stove, refrigerator, walls, closets, flooring, roof, garage, lawn, etc.?