In a 5.2.4 system, which would be the best use for the Invista 650?

My ceiling is sloped/vaulted (2.5 to 2.6m) where the speakers will be installed for the Height setup. The Rear surround location is in a bulkhead which is flat - non vaulted section but is still in the ceiling.

Should I use the 650s as rear height in Atmos (vaulted) or as rear surrounds (non vaulted)?

I figured perhaps the best setup was:

Front Two Height speakers - HTR7000 pointed towards the MLP
Rear Two Height speakers - Invista 650
Rear Two Surround speakers - HTR7000 pointed towards the MLP

Thoughts?

Sounds like the right mix. You don't want to use ceiling speakers for non-height channels unless they are HTR 7000s positioned adequately far from the MLP.

Thanks, then ill buy an additional 2 x HTR7000s as my rear surround and use the Invista 650 as ATMOS rear height