There's also some natural synergy between being an investor and being a realtor. 

I self manage my properties, and that's my preferred method.

I've definitely considered using my primary home's equity to put towards a duplex - hoping that my wife and I can save enough capital to fund a 25% down payment on a rental, and possibly do a BRRR method with my ability to flip the interior of the home between cabinetry and the renovation skills I've learned over the years.

All you;re doing is maximizing your cost.Second, the BRRRR method is not a method that will get you very far very fast. 

One awesome method is called the BRRRR method, which you can read way more about all over this site or in the book by David Greene.

I have only been able to identify a few methods for this based on my research.Literally spamming neighborhoods with "I will buy your house" type marketing.

In Ohio or another state where you own property, you likely will only be taxed on the income earned in that state and need to file a nonresident return rather than a resident tax return.Most likely the state where the property is located is where lawsuits would be brought if they are something for personal injury like a trip and fall or something of that nature because the "cause of action" arose in that state.

Also, is there a quicker way to run numbers before doing the 4 square method ?

Because of the nature of these loans, your IRA will typically need to provide at least 30%-40% of the purchase price as a down payment. 

Hello BiggerPockets family! I am new to investing in real estate I’m currently renting my SFH out right now while I do some travel nursing around the country! 
I want to get started in Brrrr’ing my first multifamily ...