.- I do all my own marketing, social media, listing vacancies on websites, etc (we are at 0% vacancy)- I have intimate knowledge of all previous maintenance and the layouts/highlights of each unit, relationships with subcontractors, and honestly I have personal (PROFESSIONAL) relationships with each one of my tenants.I'm sure I could think of some other benefits to hiring me.

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This is a great case study to highlight how important developing your network ahead of time is.

Yes, you read that right...free money.The explanation of this is a little long for this format, but I'll give you the highlights:1 - Because there is no collateral, when you flip the "cash like substance" (that's what I call it) through a deal, unlike a collateralized loan, you get the principal (this money) back...along with the profits.2 - ...to use again, and again, and again...3 - ...but you only payed for it one time.This is why I say, if you use (not spend) this money correctly, the initial cost is the ONLY COST...as in, you can have unlimited use...but only pay for it one time, and that one time initial cost is insignificant. 

You really highlighted some of the major strategies and much of the info on BP focuses on some of these angles (flip versus buy and hold etc) but also lots of general info and overlap. 

Just wanted to highlight one of @Grace Widdicombe 's points: you are in this transaction to make money, but you are also in it to advocate for the seller.  

You pretty much highlighted the pros and cons in your analysis.

Some of the highlights that jumped out for me were: up to 89.99% LTV, no appraisal fee, no closing costs, no annual fee, you can do fixed rates during your draw period and you have the option to do interest only payments or interest and principal.  

Please highlight and repost, because I'm guessing you are referring to someone else.

Few points I want to highlight, the 401K I'm talking about is with a former employer, so I'm not contributing anything to that plan and currently losing money (I had ~6% ROI within 7 years when I was employed with them).