This topic definitely sparked my interest and now I can’t seem to put the books (or my ipad) down.

Being in my position sparked my interest in Real Estate.  

I am still trying to figure out the most meaningful measurements to track given that I have a lot of investments that don't involve real estate.

So it makes it hard to calculate a meaningful percentage return.

The entire business sparked my interest.

That should spark some ideas on how to approach your seller, don't forget that the seller must have confidence in your abilities, so your RE education is important, don't be a know it all, but you can drop tid bits that let a seller know that you know what you're doing.BTW, the chance of getting some form of seller financing on a multi family is much higher than a SFD, the owner knows financing can be tough.

While just looking at COC on just purchase price *may* give you a metric that's meaningful in some respects, it won't allow you to compare the investment to other investments. 

They do not provide meaningful oversight or guidance with respect to tax code compliance.A checkbook IRA LLC is an enhancement on the above structure that is generally more time and cost efficient for investors with a more diverse portfolio.

It also can be a way to solicit advice or spark a suggestion from other investors new and experienced.We can all learn from each other regardless of where we are at in the investing world.

Doing it this way makes my reports a lot cleaner and more meaningful.