When interest rates rise, in a balanced market, rents should rise, as the alternative to renting - buying a home - becomes that much more expensive.

Said tenant failed to hook up the drain line properly both times.

Major cities where STRs have only began rising up and gaining public spotlight with the rise of AirBNB are more likely to have more shifting and less stable regulatory environments since those areas are still in the process of trying to find the balance for STRs within their markets. 

We will pay off a few more loans with smaller balances, even though they are lower interest than what we are getting on new acquisitions.

I recommend that you engage with a real estate accountant to ensure you set everything up properly. 

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.

Once you purchase the property, you can look into doing a cash out refi to pay off the HELOC balance. 

Recommend you look at Lockly locks with built-in camera, so you can also see who looked at the property and tell if the door was properly closed. 

I guess my challenge right now is to define the strategy and balance all the factors, such as job and population growth (value increase), cashflow (demand & supply market, interest rate, property tax, maintenance cost), and risk control (insurance etc). 

: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.