Setup with Beam + 2xMoves

Hi! I've decidced to change my current setup with Sonos and i'm not familiar with its capabilities.

I'm interested in getting one Beam and two Moves. I would like the two moves to move around the house and when it's time for movie to pair them for stereo with the beam and eventual sub.

Would that be possible and if so would you suggest to be good idea or is there a flaw in my desire.

As addition will it be possible to stream the sound from PC to sonos and a wall projector at the same time without any additional complication and/or latency?

Best regards!