These are professionals with additional training and a stricter code of ethics.

There is no additional "risk" on the note like a demand clause etc, but you have  extra expense in upfront one time costs and the pre-payment penalty that most programs are sold with if rates do drop as expected in the future.  

Additionally, I have one savings account for reserves for all my properties, which I add to every month. 

Here are a few additional strategies that might help mitigate risk if you decide to rent the property:Hire a Strong Property Management Company: While you’ve already spoken with some PMs, consider finding one with extensive experience managing single-family rentals in Cook County specifically.

Does this completely prevent the tax lien holder of getting additional gains after foreclosing? 

Are you looking to do additional projects like this in other cities/states?

If your hold period is short, it may not make sense to take bonus depreciation.BENEFIT - Clearly additional depreciation is the benefit, but only if you can use it. 

In addition you are sharing with cellular network, which gets priority.

*Older systems contained insulation with additives that may oxidize copper wire. 

Most lenders who order appraisals are required to order them through a 3rd party AMC, which can add additional costs to the appraisal but ensures that there is no lender (Or borrower) bias in regards to the values.