The northland MAREI meeting and the main monthly meeting at MAREI have a minimal fee, or for $99 a year you can attend all of them for no extra charge - northland is in person, the main meeting is still online, both are great ways to connect and learn. 

Would the investor have to use an assignment contract between him and new end buyer to collect the mark-up fee aka assignment fee at closing?

Tax-Free Exchanges: While 1031 exchanges aren't available to SDIRAs, the tax deferral within the account means you can sell property and reinvest proceeds into new opportunities without immediate tax consequences.

Where to get the most recent and accurate data for things like:Unemployment dataPopulation growthJob diversity and top employers in the areaVacancy rates (eg huduser.org)Property taxes and jnsurance costsI saw bp pro and reventure and a bunch of other websites provide some of this data, but i wonder how accurate and recent it is.

Paid in February but since that February only paid January rent he got another late fee for February. 

There are tons of other metrics to consider such as rental rate, job demand, growth, path of progress, taxes, schools, crime, and on and on.

I have a non-residential commercial mastermind and the fee started at $2500 in season 1. 

Top 3 reasons owners hire PMCs:1) No time to manage correctly2) No time to learn how to manage correcly: laws, documents, processes, etc.3) They're too nice and need someone to "save them from themselves"A good PMC can usually earn their fees by better managing the property/tenant than the owner, thereby:1) Increasing owners net profit2) Decreasing owner's time commitment, stress, headaches, etc.No matter what though, you should always plan to commit a couple of hours a month to manage your PMC.

You will want to fully understand the tax reporting burden you will face. 

It is a fairly signinificant set up fee and monthly charge.