As I recall, a hole drilled for the standard FR mount will also accommodate the B60. At least it does so for me.
I only have one comment on the long list of possible tonearms. Some of the lesser expensive SAEC tonearms have an odd geometry. This might be a factor if you want to be able to switch cartridges mounted on head shells with any frequency, without having to readjust stylus overhang, etc. Or worry about headshell offset angle. I have never owned an SAEC tonearm, so take this with a grain of salt.
