I've been doing van life for about a year and a half now. Zoom is the real killer and I try and steer my calls to audio as often as I can. I'm also a sysadmin/compliance consultant so I don't need as much screen time.
My setup:
Internet: Xfinity Wifi in city / TMobile Max for the road unlimited phone and 40GB tether. I've not yet tried to do all my zoom on the phone but in theory that would mean your Zoom wouldn't count against you. As some folks point out coverage gets crappy in the sticks and you'll need either ATT or Verizon to cover those holes.
Laptop: HP 13 with a homemade lap desk and chairback
Van: Ford handi that I converted
Comfort: Meh, I've plans to improve the bed design but probably less of an issue for you folks.