There is a strong likelihood I'm missing something or not doing something correctly but.......thoughts, advice, and knowledge would be appreciated.

If you do not take SEO seriously... you are missing out!

Is it that big of a deal to potentially miss on this much cashflow? 

If they don't meet your screening criteria, simply tell them that.You're missing the point.

Are there any options I'm missing?

Is there anything legally I am missing here?

Creating POTENTIAL for increased revenue in the future, i.e. building add ons and improvements that result in a market value increaseAm I missing anything?

I apologize for the long post, just don't wanna miss anything.

Its the small things that I am missing and is there any type of system like maybe podio to assist me with keeping things organized? 

I am by no stretch of the imagination an expert, and I'm sure there's missing info here (what do your credit scores look like, what's your DTI look like and will it affect your ability to qualify for future financing, do you have additional credit to make use of, etc.)