I am concerned that I'll spend a ton without seeing a return.

This will be important for tax purposes and overall financial management.If you're feeling overwhelmed at the end of all this, consider hiring a property manager or consulting with a real estate attorney who can guide you through the process and handle any legal concerns.

Concerning researching the same question, I cannot seem to find a way to search for keywords to look for same questions.

Shouldn't be the top concern, and cabin/tiny homes can be superior investments, but something to consider

Everyone has their own process, but I recommend starting in excel with a unique ranking system based on the inputs that concern you the most.

If you plan to respect these rules, cartels shouldn't be a concern.

So gentlemen, after all of this, I am still a little bit concerned about doing repairs to my SD IRA property as well as property management of the SFR.

This was my concern as well regarding the legal issue and it being the same person. 

I get the concerns about liability and title insurance, but I’ve had success by thoroughly vetting the company’s history and securing protections like hold harmless agreements.

It is my biggest concern - getting into something I can't or don't care to handle.