Setup sonos + B&O speakers for TV and Music

Hello everyone,

thanks for reading the post.

I need your help and opinion for our new setup. I am setting up the TV (LG G1 55) and an audio system. I would like to mount a sonos system and add two B&O beolab 8000 speakers. I would like to use all sonos + B&O speakers both for watching TV and listening to music.

An initial idea of the setup that I think could work is as follows:

Assumptions:
- The sonos elements on the TV side will be connected via RJ45 network cable, the rear ones via WLAN.

There are points that are not clear to me:

1. In TV mode, can I have problems with sound delay?
2. The sonos Port will automatically turn on the beolab 8000? or will I need to turn them on with a remote control?
3. Will the sonos Port automatically regulate the volume of the beolab 8000?
4. Wich cables I would need?
5. There are specific Almando preamplifiers for B&O that are usually connected to the Sonos Port, do you recommend to use one? or you don't see it necessary?

Do you think the setup is correct? do you see points of improvement? or do you have suggestions? :)

Thanks for your time and help!

Regards
Albert