That's one of the fastest ways to lose money. 

They've changed formats a bit, to one that is a free happy hour and I've not been to that. 

Out of the four properties , there is one solid tenant, the other is struggling and the last two  properties are not renting.

My vote is option one.  

It also gives you multiple work surfaces so you can have more than one person in the kitchen without getting in each others' way.

I was definitely on the fence about this one for a little while before making the purchase, but there were a number of attractive features that ultimately led me to move forward with the purchase.

The answer is yes, but it is generally found when the owner is also living in at least one unit (aka "House Hacking").

Quote from @Ogonna Odo:  Small ones will not, they typically like cash or checks.

Take it one step at a time and use the forum to help you with the steps.

One tip I would give you is to make sure that you verify all tenant screening information.