I think you'd be better suited to the M/A RS6 speakers rather then the BR5's.
The RS6's are more refined and will give you a better soundstage compared to the BR5s.
As for the amp snd CDP combo, i'm not sure on them. They may have very good reviews but i just dont like the sound of Marantz. Having listened to the PM6002 with some B&W and Monitor Audio speakers, i didnt think the amp was vetry good at all.
The NAD C352 and C542 amp/CDP combo available at Superfi.co.uk is very good and it will be a lot better sounding over the Marantz set-up, with more oomph and kick for your buck but still a good, refined sound with great timing and superb bass, more so if partnered with the RS6 speakers.