Fyrnap

I would just ask you to think about support; even though they are cheap are they going to offer you with top notch support? Sometimes cheap isn't the best answer, as I know they don't offer support to save the $$.

Would you folks recommmend Proxmox over Virtualizor?

When accessing the site it is saying it is saying "suspended"

Would you folks recommend CloudLinux? We're currently using Litespeed - what are your thoughts on this?

The company is owned by OVH. You are going to have issues when it comes to support as they are unmanaged. Before setting my own company, I used to use them for development purposes and found that the servers at times were over stacked when it came to bandwidth. Great spec but support were like ghosts.