Don't break any promises you make at the closing table in front of a notary public.  

I am great at managing people I work in HR I feel I have great communication and organizational skills to bring to the table. 

One of the ways I found could bring the deal back to the table is if I use one of the Flat Fee MLS listing services and save almost a full 3% in my side of the commission to an agent.

Get out of the kitchen and start waiting tables.

I agreed to bring 5k more to the table, but that's my best and final.

If they say yes then see what they can bring to the table; time, money or experience.

Update the appraisal, update the prelim, and finally go out of and back into contract 5 minutes later at the same table. 

Update the appraisal, update the prelim, and finally go out of and back into contract 5 minutes later at the same table.

A lot of lenders may tell you the appraisal is free however its not free if you dont close you will still pay for the appraisal typically (its only free and credited back at the end or at the closing table).The other part is to make sure rates are where you want them to be (low enough).  

This seller is domed by ignorance, and it's not a viable choice for you until he comes to the table with something like an installment sale (aka owner carries the 1st td).