(I would not specify how much.)If the property needs a ton of repairs, then even buying it subject to the existing mortgage may not be enough to make this a viable deal.You need more info, and fast!

To me knowing Detroit area like I do these days I would simply pass on any neighborhood that has bars and caged condenser units and this kind of theft I dont think there is much long term upside and just a ton of risk..

-As far as trying to sell land with no access, sometimes I've sold those to neighbors who want to increase their acreage, or utility companies, cities or other public entities who could use the piece for whatever reason.

There are a ton of factors that do into this.

While the 3-month mortgage deferral sure helps now, I still have to pay utilities, taxes, insurance and maintenance on my house. 

I do a ton of business in Indiana and I think we would be valuable assetts to each other's networks!

That's because structural engineers have a ton of conservatism built into their calculations. 

However, as you mentioned, financing through an LLC means commercial loans, and 9% rates are nothing to sneeze at. One

However, I see a lot of people achieve success by getting really good at one thing.

Also, I'd consider looking at on-market deals in these cities immediately to see which markets will work best for you in real-time.