I'm leaning more towards a two board solution now. A small 0.032" board that breaks out the X72 connector to a standard 26 pin ribbon cable header and a larger 0.062" board with the BNC's and RS-232 interface. This should provide a more robust solution that offers better mounting options. I don't like the idea of a large , thin PCB with heavy components hanging off the X72. The larger board would also have an SA22 pinout connector. The small, thin board might have a place for LOCK and SRVC LED's and the 390 pF cap and impedance matching resistor. Also a power input.