If you have ever learned something important by trial and error, then you can probably understand the frustration that you feel when you make a "rookie mistake" or a simple error that creates a big negative result.

Many groups buy cash flow negative deals and overraise to pay distributions right away. 

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

I'm terrified of doing all this research, finding a "dream" property, only for it to fail and negative cash flow. 

If so, this serves as a great example of how much the market has changed - if someone were to buy this property in 2025, it would have significant negative cash flow, whereas you have positive cash flow given the price point of purchase in 2021.  

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

And I'd add talk to local investors for positive and negative feedback, someone who is not trying to sell you anything. 

Even if the owner responds, it's often all negative as they somehow expect their property to never need repairs.There has to be a good balance of communication & expectations for the relationship to work.

I'm replying not to say anything negative re saving on interest paid but on what just my thinkig is.  

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.