My situation may be somewhat unique compared to most other new members here, and any advice would be greatly appreciated!

Nothing wrong with taking money off the table as long as you have a longer term strategy in place. 

I have a unique situation wherein the property I want to purchase is owned by 5 siblings and they have all agreed they want the oldest sibling to sign everything on their behalf, so they want to complete a power of attorney form to give him the right to sign.

At this point the best bet may be to sell and hope that he just doesn’t have to come to the closing table with any money.

Often time when i talk to SNCOs I find unique programs that were not discussed by the typical AFRC briefings. 

If you could do that and tremendously increase your equity, raise rents you may be able to improve your cashflow and then take out some of the equity and go invest it elsewhere.It seems like you are sitting on a huge opportunity to develop some equity, just have to look at all the scenarios and see where you come out best.If you sell, while you may get some walking money and a nice profit, you are likely leaving a lot on the table for the new owner to capitalize on. 

Joint Venture with an experienced investorMake yourself valuable ( bring something to the table other than money)Owner Financing dealsWholesale homes.I recommend reading the NO Money Down book on Bigger Pockets, ( No plugging intended ) great book for giving ideas on creative financing .

Everyone's situation is unique...and for me, I love my cubicle job and the benefits it brings.

They both Think they’re the only offer on the table.

The decor was probably bought second hand when they opened decades ago, but their food is delicious and it has a great small town atmosphere and some round tables that multiple people can talk around.