But w/ my fairly comprehensive spreadsheet, I'm making around 12-13% ROI.

Each transaction is a separate LLC to accommodate varying investors.You can PM me if you'd like more info. 

I have been trying to compile the most comprehensive commercial due diligence for each side, seller & buyer, and have a lot of information to be thorough yet efficient.

While I do not agree with all of his strategies this is by far the most comprehensive book on hard money lending I have ever read.  

If you keep the @sshole tenant below, She's just gonna be a pain to whomever you put in the upper unit as well, and maybe the new upper unit tenant won't be as accommodating.

You’ll likely need to accommodate his request.

Hi all, I've been developing some techniques to quickly build a comprehensive set of leads for specific categories of commercial properties anywhere in the US and wanted to connect with some commercial real estate investors to get some feedback on whether they would find this valuable. 

What I'm hearing is that RE investors are willing to pay for customer service oriented lawyers who can provide comprehensive representation and advice on time and without BS.

Yes, the request for accommodation needs to be disclosed before the accommodation.

Use a reverse exchange where the 1031 intermediary purchases the new property and holds it for you in a special entity called the Exchange accommodating title holder.