They are investment properties and I can't be sure of the accuracy of what sites like Realtor.com or Trulia have them at but this is probably close. 

They also assessed an accuracy related penalty on the Ms.

Try the next street, the neighborhood, anything you can find - the more data, the more accuracy, and the accuracy at best will be only "good".4) Zillow Price / Tax history - when did it last sell?  

You can use what the Seller provides, but, you will need documentation proving the accuracy of that information.  

Again, accuracy is only ascertainable in hindsight.

This is very important to understand to be able to estimate values with any measure of accuracy.

LA may be heading into some serious trouble.Median LA housing price    = $685,000 (zillow avg. of median home value & median listing price)Income required to qualify = $125,000 (0% down, 4.5% mortgage)Income required to qualify = $118,000 (5% down, 4.5% mortgage)Median LA household income = $54,000 (argue accuracy of data with census bureau)How much home can a household buy with $54,000 = $260,000 Primary factor driving LA prices = Speculation (may also argue demand)

My numbers are below and I was hoping to receive some feedback/critique on the accuracy of the pro-forma.

I am the most efficient when I am rested and can do things faster and with more accuracy.   

I have seen the rentometer website before, but was a little skeptical about accuracy.