will you have a net positive return vs selling it as a 4 unit? 

I agree that demand and the house staying dry during Hurricane Milton were positive signs.

There was positive population growth, medium home price growth, low unemployment, good rent to home ratios, and low crime, all of which are factors when I start looking into an area to invest in.  

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 are in a decent position and if done right you will be ok over time.

Have others used them and had a positive experience?

That was some time ago and opinions do change but last I had heard it was positive.

So, your focus may need to pivot from high rental cash flow to little to no cash flow as a rental with an appreciation upside.I would recommend taking your $150K to $200K and securing a solid equity position in something that will cover its expenses and maybe provide a small cash flow, but then is poised to appreciate nicely over the course of the next several years. 

Those positions are hard to come by but if you can find one and get your green card, you're set! 

You can find positive cash flow in both markets.