for me it was income potential of earning commissions instead of salary.so at 18 I got my RE license.. and while it was a bit of a chore getting going as it is for most agents..

Given your situation, a property closer to Nashville might be more advantageous for short-term rentals like Airbnb, as proximity to a popular city typically attracts more guests and higher rental income.

Diversification into multifamily also lowers risk compared to a single rental, as vacancies won’t affect your income as drastically.3.

Our thought process is to never pay off loans to maximize tax benefits from income and also take out interest free cash.

More on DSCR loans: DSCR loans won't use your income to underwrite the loan. 

Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

If you are purchasing a primary home, income could be a challenge if you work at an office.

You’re going to deduct the rental mortgage interest against your rental income and your personal mortgage interest (if allowed and more than standard deduction) against your regular income.

Some reasons you'd need to sub your tax returns: if you have a schedule C (self employemnt) or a schedule E (rental income). 

I agree with finding quality comparable properties and basing your income off these.If there aren't any, why is that?