(I'm not considering this the actual official inspection, just another layer of due diligence).I've received 2016 P&L from current PM.

@Joe KernInsurance and LLC provide LAYERS of protection, and actually would be doing differnt things for you. 

I am an investor with my license and I cannot begin to express how much it is vital to real estate.

It's vitally important especially in our area because the market is so competitive right now.

I thought about a thin layer of spray foam insulation, but am not sure.

There is still substantial risk in real estate, and leveraged assets always introduce an additional layer of risk - ask anyone who was around during prior crashes.Many folks when the look at true passive investing...they want to invest, not find a new job. 

An LLC provides that extra layer of protection.

Syndicators that have multiple layers on their accounting staff (read generally larger companies) will provide some protection, as well.  

So far, I have found that the BiggerPockets website is full of valuable information and will prove to be a vital resource in the pursuit of my investing goals.   

We feel it adds a layer of trust.During the buying process we always advocate for a multi step decision making process with independent vendors, agent, PM company, home inspector, lawyer, lender, all need to sign off on a purchase.After trust the second most important piece is execution.