.... I also have a FC-7 (foot controller) ...
Yeah, got one unused within same bargain, but so far it's still unused.
Placed the BK at KMA's musicrest, so close to operate and reach any buttons.
T4 at 1st row, then KMA / BK7-m at top.
But now I have a personal fight, leave T4 and buy Genos, or just add a PA4X-76......
Hard to do "the right" choice.
Btw,
you can also control the BK's at iPad by use of BK-app.
Downloaded, but not tested. Waiting for the "photadapter" to connect the midicable: