I get what you're trying to do.
I'd probably start at around 120hz and 45hz BW24 (with the option or raising to about 50 if the Yorkville isn't working enough). I think it will keep up with the rest of the system if crossed over low enough.
FWIW I DJ EDM with double 21" subs that contain the same B&C driver as that Yorkville. There's considerable sub40hz content in contemporary dance music. When those drops hit it feels like the floor is going to collapse.
High pass your sub at around 28hz BW (LR is down 3dB at cutoff point and you don't want that).
Also FWIW I'm no sound expert or anything - just a guy out in the field. The pros may have other ideas.
Neat idea. Post follow-up please
Edit: This is all assuming that you're playing contemporary dance tracks. If it's a live band you'd better listen to what the live sound guys have to say.