Since I am having my prospective tenants cover the cost I would prefer to have the lowest cost option that gives you the most bang for your buck, but at the same time I want to be sure that what I am paying for is reliable.

The least states:"Tenant shall pay a "late charge" not in excess of five (5%) percent of the amount in arrears for each month the arrears remain unpaid if any Rent is paid more than ten (10) days after the due date thereof, to cover the extra expense involved in handling delinquent payments.

Will they be doing other types of work like getting through the financing, becoming the guarantor, finding the deals, crunching the numbers, doing the accounting, or are they just simply doing less work?

If you buy less or take cash out you will pay tax on that amount. 

You drop them off to the court clerk, pay the court fees, and in about 4 - 6 weeks, the sheriff calls you and says, "Today's the day to change the locks."

Every dime went into a SFH, live-in flip, and my brother was paying $400 to live with me.

I got tired of paying to live in other people’s homes.

I'd suggest not paying anyone for mentorship.

Usually when a landlord cannot find qualified tenants but are getting a fair amount of inquiries there's an underlying real estate problem and the qualified tenants simply do not want to live in that location.

In future if you are refinancing I would sometimes look to pay a higher purchse price but have seller concessions to bring the price down on paper but not for comp purposes.