Wishing you the best in continuing to build out your portfolio. 

I know that my current cash flow is a result of the unit being my primary residence first, and that not all units will cash flow like this, but can't help the feeling that I should be expanding my rental portfolio over the years.

Quote from @Spencer Ware: Looking to start expanding portfolio.  

Banks, Credit Unions, direct lenders, portfolio..pretty much the full mix of of lenders any of us would use.They all said the same thing.

For example, are you looking for coaching for large multifamily, storage facilities, short-term rentals, mobile home parks, how to scale a single-family portfolio, or any other specific real estate strategy?

Buy and holds is the key to true wealth with all the benefits of depreciation, appreciation, loan pay down by your tenants, leveraging the equity, cash-flow etc etc, but it often times isn't the active income that pays the bills until you build up a portfolio and even then there's the tenant management or managing your property managers.That's why I'm involved in all 3.

I assumed this would be the cheapest out there.I have some great local portfolio lenders, DSCR lenders, conventional lenders, and commercial lenders who are competitive and should be able to beat 6.75%.

I'll add that you should consider house hacking here in Nashville, which is the most tax advantaged way to grow your portfolio.

We are similar in the have enough, but my RE holdings likely make up a bigger portion of my portfolio.  

It also gave me the chance to experiment with short-term rentals before transitioning to a long-term hold, reinforcing my strategy for growing a real estate portfolio.