B&W and Mac are regarded by many as a good combo. I haven't heard either piece, but own MC275 (tubes) and 804s and love the match. I have heard at my dealer's larger B&W (803D, 802D, 800D) driven by Mac solid state (MC402, MC501) and was a great match.
For your specific match, however, you might want to inquire at the Mac forum (www.audiokarma.org) as there are probably people who own or have heard this specific combination.
My 2 cents