I shot him an email right after I started this thread.  

I have always been interested in home construction techniques that are different or older.Container homes, these sorts of shot-crete homes, bale homes etc.The biggest issue is not that fact that they will rent, for if they are in the right location, of course they will rent just fine.

If you think land flipping is for you, there are plenty of decent paid options out there. 

I can take a shot at this.

Understand that they are doing this to make a profit, so it will be more expensive than coordinating maintenance yourself.It may be a decent program for a DIY owner that wants to just outsource maintenance, but you will have the same maintenance issues with this company that you would with a PMC:1) Higher costs2) Admins answering the phones & assigning work, that just know the basics about maintenance.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

You have decent cash flow that you'll continue to accumulate, which you could put toward a deposit later for another property. 

I also want to clarify that I do still keep a decent amount of cash - just not enough to cover every single property roof at the same time if that ever happened for some reason. 

If it adds $100K of value then the initial negavie equity is $100K.Now for the cash flow, $200K for $1800 rent is not going to produce decent cash flow with ADU financing. 

The list of property management suites at Capterra is a decent start, so long as you take their reviews with a grain of salt.