This seems a bit risky and too complicated, in my opinion.

That being said, this neighborhood is prime for gentrification and appreciation based on the neighborhoods surrounding it. 

I would make sure he understands his role on this until that lease expires.  

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

This is also my first rental, so there are many unknowns at this point.

Help me get this concept clear in my head, should I BRRRR and build a portfolio of 30 homes or build these one at a time as my other sources of income allow. 

Might be a silly question, but this is true from what I understand.

Should I meet this person over coffee?

I borrow dollars from the bank and immediately sell those dollars to owners of commercial income property that I want to own.And then I buy those dollars back over time using the cash our tenants pay us in exchange for using our space.I'm currently shorting $10M and I can't lose regardless of who wins on 11/5By the way, the dollar will always decline in value so this thesis is applicable in any election or economic cycle.Go vote for whoever you feel strongest about, but remember you have infinite more power and that which is within your direct control. 

This is not my first huge rehab so I am ok with that and the price.