Mobile/Movable Video Conferencing Setup Using Poly R30

Hi there,

I am looking to set up a movable video conferencing system for my workplace and i have shortlisted the following products

1. Poly R30 - Camera and Speaker - https://www.mwave.com.au/product/poly-studio-r30-4k-allinone…

2. HP Dock - https://www.mwave.com.au/product/hp-g2-usbca-universal-dock-…

3. TV Trolley - https://www.screenmounts.com.au/store/p14/Mobile_TV_Cart_AVF…

Does anybody have a suggestion of what kind of screen i can use in this set up. prefered size is 50-55 Inches ?

Also any other suggestions related to the set up are also welcomed ?

Cheers