Sonos Arc + TV with eARC + HDMI switch config

Hello!

I am a newbie to Sonos, having shed an old Samsung soundbar (which was terrible!).  I have just ordered the Arc, and will soon complement with 2 x Era 100s (or 300s if my budget stretches!) and later the sub. I’ve gone round in circles trying to decide on the best configuration and it would be great to have more experienced help!

My TV (Sony Bravia, 4k) has eARC, but it doesn’t have enough HDMI inputs (I need for Apple TV, consoles FireStick, Virgin media box, DVD player).  My plan is:

• TV to Arc via eARC 
• Inputs > HDMI switch > one of the my TV’s HDMI inputs

I want to maximise audio and display quality so will look for a HDMI switch with minimum 4k and Dolby Atmos pass through.  I’ve seen posts about Feintech, HDFury (expensive, great reviews, but I don’t think I need because I have eARC), Kinovo etc.  A couple of questions:

1. Does this config make sense?
2. What HDMI switch would you recommend (to maximise the capability of my Arc)?

Big thanks!!