Hi Richard,
I am not that up on the 'modern' surround sound technology but what you describe sounds good. I know that both Yamaha and Denon amplifiers have been rated highly in the past so might be worth having a look at them too.
If you are looking to stream video's I would highly recommend the Apple TV 3 too, great bit of kit and reasonably priced (for an Apple product )!
For Blu-ray It would again be worth looking at Denon too.
Paul.
Streamer: NovaFidelity X40, Turntable: Rega RP3, Arm: Rega RB303, Cartridge: Audio Technica AT120E, Amp: Belles Aria, Loudspeakers: Quadral Aurum Montan VIII, Rack: Creaktiv Trend 1, Cables: Beresford, Chord, Coherent, MCRU, Rega, TCI.