Chase what you can (focus on other landlords/data), don't stress about what you can't get responses on, and avoid doing business with that PM.

You do not deserve that stress and neither does your tenant.

My current house has the living room and dining room open exactly as you see, original to 1959.The true answer before you start to stress about adding a beam, is to confirm what is in the ceiling, supporting the ceiling joists above that opening.

Don’t stress over it, let them handle it

But, the leveraged guy will have to operate at peak efficiency and will have more stress than the debt-free guy over the life of ownership. 

My goal is to work less, sell more, stress less and relax more.

In the coming age of the driverless car, the commute distance and time to work versus the current stress level of the commute is going to become much, much more important than it is now.

Even if the judge ruled in your favor, you would still lose because evictions are costly.... in time, money, and stress.

It can be stressful sometimes but I got flood insurance for that.

From my side (I am the one buying the property) it was very simple and not one bit stressful because my attorney handled most of it.