Mordaunt Short 903s Dipole or 902 Bookshelf?

[HardTarget]

I am a complete newbie here and I have decided to go for the Mordaunt Short speakers to go with my Denon AVR-1804 receiver. The fronts are pair of 908's, the centre is 905C and the Sub is 309W. The problem is I really dont know what to go for my rears. I have a choice of 903S Dipoles or 902's which are direct radiating speakers.

Also while on the topic is this a decent setup for movies, music and games?

Thanks in advance.