Wow! That is a crazy big PBC. Did you buy that board or design it yourself? I want one!!! I think you could squeeze this DC jack pretty much anywhere on that thing:http://www.newark.com/lumberg/1614-09/dc-power-connector-socket-500ma/dp/13M3783?in_merch=Popular%20Products&in_merch=Popular%20Products&MER=PPSO_N_C_EverywhereElse_NoneThey are my favorite 9VDC jacks and I finally found them in the USA! They are kind of expensive though...
Let me know how you get on with your own build reports!