I know the easy answer to this is "check with your CPA" but I'm still in the process of working to establish with a real estate specific CPA who better understands the nuances of these topics.

Looking at the big January 1st rule changes?

Those losses can be substantial, by the way within an HVAC system-Again I doubt these technologies would hold up under scrutiny within a court of law because all it takes is one person with even a basic grasp of principles of engineering and you’d find an easy 10+% delta in these systems’ measuring abilities.

I figured later after I found out what the low bid was, that whoever got it lost an easy $100k. 

Easy.

That means no HOA neighborhoods, which rule out many places.  3bedroom might make it tough to work, unless you're sleeping in the laundry or garage and renting full 3bedrooms. 

Zelle is too easy to dispute and not secure enough.

Quote from @Christopher Berra: Quote from @Kevin Perez: If you want any advice feel free to reach out all of my rentals are S8 in several different states - every state has their own rules and guidelines but reach out if you are still interested What has your experience with Section 8?

It is delinquent enough (Greater than 90 days but below 120 days(can't file first legal until after the 120th day by federal rule (Except under very very specific circumstances)) to where the lender or servicer has sent the breach letter (Notice of pending foreclosure) with an expiration date that the loan will be referred to a foreclosure filing (Trustee/attorney) if the borrower(s) don't cure the breach within that defined period of time.* A notice of default is not a letter sent by a creditor saying they are late.

You need to understand the market, advertise to buyers, show it in the best light, know what to say and what not to say, be skilled at negotiation, understand contracts, and much more.If you don't know how valuable a good agent can be, it's because you've never used one, or they made it look easy because they are skilled.