That was the final straw.So instances of money collected post sale, purposely concealed issues on the property, and not enforcing the tenants to provide access needed to the property and it appears he maintains a relationship with said tenants, it appears like he was in on the caper.Can I request a lower buyout amount. 

This thing has been maintained since the 1950's by the same company that handles it now, believe it or not!

I highly recommend maintaining HVAC, plumbing, and electrical outlets.

I excluded all expenses including taxes, insurance, HOA, 10% vacancy , 10% Maintainance, and 5% capital expenditure.

So to your question, yes, units with new stuff will cost less to maintain because they tend to break less and you have longer to budget for total replacement.

You can make a deal with your broker since it won’t be your main career, and now you have data that you not only get for next to nothing, the money you save on realtors covers the cost of getting and maintaining the license.

The first pillar is avoiding unnecessary and risky activities (don't drink and drive, insurance generally won’t cover your poor decisions) and take good care of your investments(maintain your property, etc) - these simple steps will help you prevent lawsuits before they even occur.

Tenant shall maintain the Premises exterior including the entire lawn, front and back free of debris so as to maintain same in a neat appearance.

It's more of a concern for him maintaining his tax advantaged status than anything.  

Or are they actually proactive at enforcing your lease and maintaining eyes on your property?