Ultimately I achieved an infinite return on my investment: without having any money in the deal I flow roughly $450 monthly and have around $100K equity in the property.

Ultimately, It all comes down to a cost analysis.  

Investment Info:

Single-family residence buy & hold investment.

Purchase price: $134,000

Cash invested: $44,280

This was a perfect house hack with buying a home as a primary residence using a 10%...

Ultimately, my goal is asset diversification since all I have outside my primary residence it in the stock market 

Look at it this way - you did just about everything wrong that a new investor could do and you still survived!

As a result, the Tax Court ultimately disallowed the deduction.The lesson here is clear: when attempting to write off assets such as RVs, boats, cars, or planes, meticulous record-keeping is essential.

---Which did you ultimately choose?

Here are a few I recommend: "Rich Dad, Poor Dad" by Roberto Kiyosaki; "Set for Life" by Scott Trench; "The Unofficial Guide to Real Estate Investing" by Spencer; "The BiggerPockets Ultimate Beginners Guide" found here on BP; "The Book on Rental Property Investing" by Brandon Tuner.

I fought it, survived then 2 yrs later found out i had it again in anther area.

I will say that their policies were quite annoying, but ultimately the deal did end up going through.For example, they don't do same day funding on closing day.