New setup needed

Hi,

I am looking for an AV Receiver, one where I can stream music wireless from iPhone.  So a receiver with Airplay and DNLA.   Also want some good surround sound speakers to go with it.  5.1 system would be good with a centre speaker and I want to put the 4 other speakers on the wall with the cables buried into the walls.  A wireless sub would be good but not a deal breaker. I have noticed the Yamaha RX-V673 has what I want.

I would appreciate any suggestions. On receiver and speaker packages.  Looking to spend around £700, but a little but more if in have too.

Thanks Richard.