I would go with the FF first... Regardless of the BM, you'll still want to know depth. Once the sun is on the water in the summer, I am on the bottom...

Even if you are running natural (.6-.8) there will be times that you'll want to run the wires lower- Summer fishery..

Just my .06
_________________________
"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter