Hi, I'm starting to put together a custom build. I'm looking for 5 string dual coil pickups that are capable of connecting to a three way switch to select front coil, both coils, and rear coil while staying hum free in single coil modes. The bridge string spacing will be 17mm. The only one I'm seeing is the Bartolini 2J squared pickups. I like Bartolini but wanted to see what other options might be available. The bass will be a 5 string status graphite stingray neck on a mahogany body with quilted maple top that a local luthier (Dan Ransom) will put together for me. The pickups will be paired with a Mike Pope preamp. Thanks!