Some of those include Liability. 

What could I expect to cash flow per year including on and off season?

People want flexibility, mobility, convenience, and automation...including residents, not just travelers. 

The BiggerPockets podcast and resources, including books by J Scott, are excellent tools to learn from seasoned investors and gain valuable insights.Utilize BiggerPockets Resources: Make use of the podcast, articles, webinars, forums, and other resources available on BiggerPockets.

As far as negotiating furniture, I would include “furnishings negotiable” or “comes furnished” in a contract.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

What screening company address should be included for applicants whose screening reports were run through Zillow?

To include, stealing from businesses, sell drugs, etc... but what my area and CA is hard on is environmental violations.

That included emptying the septic ($300ish).

There are just too many red flags here (including your inexperience) for this to be the right first MHP deal for you.Attend F&D's bootcamp (www.mobilehomeuniversity.com), get educated.