I would be inclined to look for a higher end version, previous generation, with more power say 105 or more wpc/ 2 channels driven. There have been a number of sales, not sure how long you can wait in search. Suggest posting this request in the B&W speaker thread as several are more on the pulse of what is available.
Main Kef: Reference 205/2 & 202/2c, Surrounds: Kef XQ40, Velodyne Optimum 12, Integra DHC 80.3, Ayre K-5xeMP, Oppo BDP-103, Bryston 4Bsst2, Parasound Halo A31. Second B&W: 685 (3), CCM618, Def Tech Powerfield 1500, Onkyo TX-NR1008, Zone 2 Klipsch AW650.