Would there be other tax benefits for high wage earners and what would those be?  

I would however give them the benefit of the doubt at first and try to come to some sort of peaceful resolution first.

Rarely are there benefits to the seller to structure a transaction in the various ways you propose. 

If you can get 15%+ returns and 8-10% cash-on-cash in a passive manner, reap all the tax benefits of owning real estate, and not have to manage the property -- that's more attractive than a lot of other investment options out there. 

Your mentor has needs; try to meet them and develop a mutually beneficial relationship.A mentor can benefit your growth, but it's not as simple as one post on a forum full of strangers.

It will familiarize you with the basic terminology and benefits.

I fail to see any benefit by renting to section 8.

The other electric meter I pay for because it feeds 2 units (the first floor and basement).1)Would this be a good investment with worthwhile tax benefits?

You can also write it off as a business expense and there could be additional tax benefits for energy efficient home improvements.  

I have not consolidated them under one LLC as of yet—my attorney advised me to beware of franchise taxes in my state that may cancel out the benefits of consolidation.