We will then, as the units turn over, get rents up a good bit further with additional design improvement renovations and hopefully reno into lower interest rates when they drop or at the very least in 5 years on our 20 year we'll have paid off enough to refi into a smaller loan.That is the only kind of smaller deal we can find in neighborhoods where we want to buy now. 

You would arguably be better off buying a CD at a slightly lower yield with almost no risk, time, or stress requirements. 

Single-family homes offer higher cash flow, lower maintenance, and potential equity growth, but may have less privacy and slower unit growth.Good luck!

I got 800+ credit and great mortgage offers so only reason im doing this seller financing idea is that its lower monthly cost

All of this equates to lower returns with turnover costs, being the primary one.  

The result is typically less loan proceeds, lower rate, worse terms, etc.

For example, California has an $800 minimum franchise tax, while other states have lower fees or no franchise tax at all.

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.

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.

If it was paid off or if rates would drop so I could refinance to a lower rate, then it may work.