My weird 55.9% of the original asking price was actually oddly specific and based on comps, rehab estimates, etc. 

I think your odds are small, but greatly improved if you approach them with your logic, and as a human. 

Odds are your city has regional/local banks that carry notes.

. - I can understand the NDA but the non-compete agreement is odd.

Pretty much, you can fight it and I personally think your odds are pretty good (although I am no lawyer).

Another question I have is this program called DPA which is the down payment assistant which basically gives you a second mortgage which pays for your down payment and closing cost up to $15k and I was wondering if I was to use that program would that help my odds of getting the property even more??

Odds are you don't have that.  

I'd cold call Cragislist for everything that looks like a FSBO or otherwise seems like an "odd duck" that a real estate agent would have a hard time selling.2.

I am looking to make my first deal and was wondering what my odds of being approved for a mortgage are.

I just had this happen at an eviction, oddly enough...guy i evicted for not paying rent left me a 5k boat on property with trailer.