I believe BH is considered "rural", so I suspect your best bet would be to reach out to a local bank like SBSU.

The long-term goal would be to eventually sell the multifamily properties once our cash flow reaches a certain level and transition to being completely debt-free, living off the rental income from the fully paid-off homes.Does this seem like a sound strategy from an investment perspective?

Having everything together will be your best bet..

Would QuickBooks be my best bet or is there something else that would fit my needs better?  

Columbus, Ohio is definitely one of the strongest bets — its metro population is well over 500K, median home prices are still around $300K, and the market has a strong mix of rental demand, positive cash flow potential, and long-term appreciation.

And unless someone is looking at your actual tax returns and documents, there’s no way to responsibly tell you what to do.Also, real talk — you’re not going to get accurate, customized advice for free in a public forum.

Hey everyone,
I’ve been listening to the Bigger Pockets podcast for about 6 months now and have saved around $20K. I’m using this time to learn, build better money habits, and continue saving. My goal is to buy a dup...

Quote from @Chance House: Hi Sipan -If you wish to keep the property in an LLC, your best bet is to pursue a DSCR refinance- as conventional lender will not allow you to hold a property in an LLC. 

Poorly built, poorly maintained, but free housing.

Unless you don't care about cost (which you indicated you do) your best bet is to work with a broker.