So the attitude was the only negative factor and the learning lesson..

I know there are a ton of factors but I was thinking this:Run the numbers on my currently owned property, and maybe see how much cash and equity it would produce in 5, 10, 20 years.  

if it's something you don't enjoy i seriously recommend doing something else there's just so many moving factors to wholesaling that's left out and I had to find out the hard way!

A seasoned buyer should be able to evaluate a deal based on general numbers and cap rate and other factors.  

@Keith White I don't see where you're accounting for Vacancy (8%) Maintenance (5-10%) and Capex (10%) you should also factor out 10% for property management if you decide to have someone else manage the property in the future.  

And to do this, good location is more critical factor than price of buying?

I know, there are a LOT of factors...if I am wanting to try and live off cash flow (which would be very hard supporting my family), keep my full time job and attempt to do on the side.

The variance in percentage has to do with a combination of several factors.  

Craig, More Factors here than what you have listed, but for a QUICK Evaluation in Self-Storage: 1.  

Also, if it is not too expensive, one entity can be exposed to lawsuit but another entity to hold the asset.