Hi,
Surely DEnon is a good choice when it comes to receiver. Below is comparison chart for Denon receivers and Audyssey Calibration.
https://docs.google.com/open?id=0B1MJnm9Fo4kCajVsYzJQb3lUMXlhSUE5UGswUWJOQQ
1912 has Airplay, but keep in mind Denon requires wired network connection for it work with Airplay. Other Alternative is to dedicate an old laptop with music on it on wireless network, run iTunes, download Apple Remote (free) and play you music. Ofcourse Airport Express is another option as suggested by @Koushikp.
Audyseey MultiEQ XT is better than MultiEQ. 1712 has better calibration (MultiEQ XT) than 1912, but no network, Airplay also analog to HDMI video.
5.1 Boston Acoustics PAckage may work better for you. BA, Denon and Marantz are all same company.
Ravi Macha
TechArt Home Theater