Hi Peter. From what i've read, atmos allows for heaps of speakers in many locations.

In a home theatre probably overkill imho.

We have 7.1 plus a 2.0 second zone and this works perfectly for us.

Depending on budget, split receiver and amp is better for future proofing as much as possible. We have an integra receiver and power amp which didn't cost that much more than a decent all-in-one receiver/amp.

Next time you are over you can have a gander if you like.

Kids, Joanne and I love watching movies together now :)