The flooring is fine but the toilet, bathtub, and there is a window I want to replace with all glass that I would like done.

What suggestions do you have for me to replace my income from real estate? 

But that being said I'd use every avenue available to you so you can get the perfect replacement

For example, the roof on a 4 plex that already has two layers is going to cost you at least 3 months of income WHEN it needs replacing.  

Realtors are just middlemen in a transaction and can be replaced if they aren't responsive.

I say water heaters because lately it seems that all I so is have water heaters replaced.

If you want a tie-breaker,  you can hire a structural engineer for around $400 - they will give you a clear statement as to what is needed.Also, be sure to consider the age of the house and where you are lifting e.g. near a bath, kitchen or other potential drain line) - if it is an older house and has cast iron pipes, you will probably have some plumbing work when you are done lifting. 

I'm glued to the TV for info, and find out my rentals are literally 2 miles from all this nonsense.But, the numbers hold up and everything dies down.Fast forward a year, I'm making $800 a month net off of two rentals there and $125 a month rent here.Deck needs a few boards replaced on my first rental and it needs resealed.  

Since your tenant has indicated his lay off is coming (but not here yet) you two can begin the process of finding a replacement tenant when this does happen. 

I will be getting rid of this and replacing it with a power aired furnace.