I would avoid Ring if it is landlord installed and instead just install traditional wired security cameras.I think any multifamily should have cameras at entry points and in the parking lots.

One company owns everything and does nothing (this is your SLLC a/k/a “asset holding company”) and a completely separate company handles all of your operations (this is a traditional LLC a/k/a “operating company”) For the operating company which serves as your face to the world and through which you do all your business, you establish a Traditional LLC to carry out the operations of your investments.

When I hit my 60s is when I will likely enter phase two of retirement, which is more “traditional” in nature, where those retirement accounts that have now been able to compound for decades will slowly be tapped.  

I have been approved for a traditional investment loan at 5 percent interest while putting 20 percent down.

A traditional IRA or 401k plan though are not the best for me because of this time remaining.

"Approved housing" which represents approximately 70% of the market, traditional housing (locally referred to as community housing or family housing) which represents approximately 25% of the market, and unapproved roommate-style housing which I would guess to be around less than 5%.

Since I’m not using a traditional mortgage to finance the property, how should I calculate the closing cost with the BRRRR calculator?

This year, the following counties will have similar tax lien auctions instead of the traditional tax certificate auctions: Baldwin, Calhoun, Cherokee, Cullman, DeKalb and Elmore. 

You should be able to refi into a traditional bank loan once you fill the park.- I suggest re-examining the cap rate to ensure that the NOI is based on lot rents only.  

I don't know of any traditional lenders like banks that will loan 100% on non owner occupied property.