I think the bedroom system is 7.2.4
2 F//L
2 ATMOS high fronts
2 side surrounds
2 back surrounds
1 center
4 subs

I should check the manual but I think the Marantz AV7703 is maxed out.

The downstairs system with the Marantz AV8805 is severely underutilized.

2 x LFR1100Actives
2 x upfiring ATMOS speakers
2 side surrounds
2 back surrounds
1 center
2 subs

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.