First off all of this advice is GOLD! Thank you all for your help.
I will elaborate a little as I have been asked to do.
The deal came up driving for dollars and was an off market deal (the owner had no plan to sell until i contacted him and started talking numbers).
The deal: 150K Cash. I had a 15 day period to do my due diligence verifying all income and expenses and to have any necessary inspections completed.
At the end of my Due diligence period i had to put up the 13k deposit for earnest money (None Refundable if i back out for any reason after the Due Dil Period, which has already passed). The inspections and attorney fees are adding up to the additional 2k, totaling 15k of costs i have sunk into the deal at the moment. I am using a attorney to handle the Deal and he recommended (after the due dil period had passed) that if I was planning on refinancing after closing the property with cash, that i could "double close" on closing day and close the financing at the same table. This would save me money and time if i was to go back and do a cash out refinance at a later date. This sent me on the hunt for a lender and ultimately led to the property being appraised as you all know is standard for all Institutional loans. Zillow, RPR, Redfin all had the property's estimate far above 150k. Estimates came in Any where From 167K - 225k, so it never occurred to me that it might not appraise.
SURPRISE!!!!! Property ended up appraising for 120k. I called the owner begging and pleading to renegotiate but had no luck. The owner was not interested in renegotiating as im sure he realized it wouldn't benefit him (he could just walk with my deposit and keep the cash flowing property). I mentioned earlier that the owner had no plan to sell the property, so the threat of walking away from the deal hoping he would come crawling back was slim. He would not be listing the property after i walked and wouldn't be presenting the low appraisal to the next unsuspecting victim. Damn!
I was stuck.
I Took some deep breaths, I ran the new numbers and posted to Bigger Pockets to see if i was overlooking anything.
I got to thinking that my original deal was all cash and it worked, so why am i worried?
The numbers are still great and reading through the comments of this thread have settled my nerves. As many of you have pointed out the appraisal is just an opinion and only something i would need to worry about if i am planning on selling. This is a fantastic property that cash flows like a boss in an area that is starting to see some appreciation and will certainly see more in the years to come. I plan to hold this property for a long time.
As of now i am moving forward and am set to close in 2 days.
Thanks again to all of you!