I believe having a cash flow of at least $100 should be enough but that would also be tied into the amount of cash invested, but please, correct me if I'm wrong!

If I won the auction and the owner is able to reclaim the house 90 days afterwards, there's an opportunity cost involved with having my money tied up for that long. 

You did well by tying up the deal before the 15+ showings happened.

If there are people with baggage, they may not be able to participate.Be careful about criminal behavor tied to a discussion of a 9 member LLC.

Multiple demand generators that will likely get stronger. 

The house has no HOA.Here's what they are charging for:Homeowner's Insurance Premium ( 12 mo.) to $600.00Title ChargesTitle - Lender's Title Insurance to WFG National Title Insurance Company $522.00Title - Owner's Title Insurance to WFG National Title Insurance Company $1,148.00Title - ALTA 22 Location - (6-17-06) L Endorsement(s) to WFG National Title Insurance CompanyTitle - ALTA 8.1 Environmental Protection Lien (6-17-06) Endorsement(s) to WFG National Title Insurance CompanyTitle - ALTA 9.10 Restrictions, Encroachments, Minerals, Current Violations Loan Policy Endorsement(s) to WFG National TitleInsurance CompanyTitle - Settlement or closing fee to WFG National Title Insurance Company $710.00Title - Loan Tie-In Fee to WFG National Title Insurance Company $200.00Notary/Signing $175.00Government Recording and Transfer ChargesRecording Fee DOT - to WFG National Title Insurance Company $40.00 $40.00Recording fees: Spousal Deed/Grant Deed **Estimate if Needed **$80.00 $80.00County Deed Tax/Stamps to WFG National Title Insurance Company $1,071.00eRecording Fee to WFG National Title Insurance Company $50.00 $50.00Additional Settlement ChargesProrations - estimated to $400.00Is there a way I can just do the title insurance, and close the deal myself?

Since you are drafting the contract you can sign the lease with him and tie it to the purchase agreement. 

So many factors tie into this question.

There are so many variations in the greater Dayton area that I actually built a spreadsheet to keep track.Bottom line is, charges for any service provided by a government municipality is tied to the property, and subject to assessment to the property taxes if they are unpaid.Here's how we protect against unpaid tenant charges:With exception for some small multi families, the tenants are responsible for all utility charges.

Another option is they could possibly sell part or all of the business to a stronger operator.Being in the food business for decades myself before getting into commercial RE it sounds like to me the wife likes running the business and the husband does it on the side while most of his focus is on his job that pays the bills.