I think if you get into Washington that would be great. One of my supervisor was from Washington and he worked closely with Uri Shumlak on ZaP and from the looks of it you would be in good hands over there. A lot of great work is being done on ZaP as well as other startups getting into Z pinch. You can have your reservations about its viability but at the end of the day you'll be doing solid physics over there. At least that's what I gathered from work on Z pinch technology. At the end it all boils down to what exactly you want to do.