My daughter is a 2% shareholder in X LLC, which greatly reduces my audit risk. 

How should i handle or screen these rental applicants for previous rental history ?

I suggest you get a P/T job (or F/T if you can handle both) at a property management firm so you can see all that being a PM entails.  

Being financially free is too vague...you need to find what you are great at (super powers) and build an empire around you that can handle everything else.

The 6-month period is coming up and I received the following from a title company seems to be the escrow company handling the case.

Turn this over to your lawyer and let them handle it.

You can at least prevent/reduce the credit card letters by asking the credit bureaus to stop selling your address and by putting your name on the direct mail associations "do not mail" list.

Also we handle the materials and invoice you once they are delivered to the job site.

I know which is very high, my property is listed as non residential as per water company since meter is 8in, currently I am paying as a landlord full monthly water bill and all my profits this bill is eating.I ask the water company my property has submeters if i make those active is the water bill going to reduce by making the property as residential?

I would inspect my properties in the early months of the lease but generally I didn't need to once I had a good handle on the amount of care they were taking.What cut way down on my turnover cost was requiring a minimum of a two year lease.