I have made numerous clients extremely wealthy.

Heartless and has an agendaIt's ironic you say this because the site is extremely friendly to your profession. 

One other thing I didn't mention is that our timeline for moving is extremely flexible and we would not make our plans until after we have found a suitable tenant (even if that means staying with a friend or renting something short term locally), so at the moment I am a bit inclined to want to try things ourselves using some of the recommendations from @Nathan Gesner, @Chris Berry and others.I also did a a rough analysis based on the two local PMs I have researched and the potential cost savings would be over $6,000 a year.

However, I've also seen feedback that eXp is best for seasoned agents (which I am not), and new agents may not get the support they need, unless they have a good sponsor.Any feedback or insights on selecting a brokerage from part-time agents would be extremely appreciated.

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.

I really see Columbus Ohio as an extremely safe bet for the next 10-20 years.

All the more power to you if you figured out a way to solve for it. 

The registered agent generally is just for notice purposes and the manager and/or member will have powers in the LLC, which are the roles that matter much more so.

So any help, advice, or guidance will be extremely appreciated. 

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.