Seller financing is an awesome tool and I have a vacant lot using seller financing right now. 

@Mark H.You are correct that for purposes of the 5500-EZ, the IRS is looking for the tax ID of the Plan Sponsor (your S-Corp).When the plan itself is transacting, such as selling a property, the plan EIN should be used.

Pay down debt, save money, and watch for a dip or correction. 

If I am to understand your recommendations correctly, are you saying that making 10% improvements only matters if I intend to flip the property?

So if I understand this correctly, it’s possible a lender may not give a loan if the property is a “fixer upper”, but a way around this is to use a 203k streamline and make improvements to the property?

I have a background in finance and my full time job is in insurance, but have always been interested in using real estate as a wealth building and passive income tool. 

I've been soaking up information for several months now trying to arm myself with the tools I'll need in order to start finding great deals and making a steady flow of passive income.

Would I be correct in assuming I could knock the 50% down to say, 20%, to net a positive cash flow of $600/month?

I guess the correct question would be at what age of the house you sell it so it does not become a liabilty? 

Sure there are great tools available like the ones here on BP, but with any analytical tool:garbage in = garbage out.Most inputs are easy to figure out with some leg work on stabilized properties.