Turns out that rates can go up and mess up people's investments.

Is anyone else hearing about these new developments or being affected by them?

If you walk through every inch of the potential investment property with a powerful flashlight to look and test for leaks, you’ll know exactly what you are purchasing.What else should investors purchasing mobile homes look out for?

Of course the customer is acting as the contractors bank , who else is going to ? 

That way you can give up your rent (aka paying someone else's mortgage).

Do you want to live here 1-2 years and then buy something else, or is this your near term home until something in your life changes (kids, job)?

Whatever direction I go, I would leave my current job and take a few years to learn the craft and business under someone else before breaking off on my own. 

Does the PM personally visit every property or is it someone else (for example a maintenance worker?) 

Just selling the 2nd property rather than doing an additional 1031 into something else?

That's not what's happening since costs are the driving force above all else.