Set up web server and migrate everything from my cloud host

Description

I would like to migrate everything from my cloud hosted server (Cpanel) to my own physical server. You'll begin the project from a fresh install of a ProxMox VM. I'm probably either going to use Ubuntu Server with a GUI or just use Ubuntu Desktop. I will install the OS but you will take it from there.
You will need to install all the (open source only) software required to host my web applications from the new server. I can provide you with VPN access to my network in order to access the terminal directly through ProxMox.
I have a subscription with TSOHost where I'm currently hosting 3 domains, 8 subdomains, 17 email addresses and a MySQL database, I'm happy to let you have a look around Cpanel before committing to the project in order to see what's involved.
Ideally, I would like all of my IT to be in-house and rely on zero 3rd party companies for anything. Preferably, this will include such things like hosting my own domain names and so this project will probably involve setting up an authoritative DNS server to handle routing.
I would also like to host my own POP/SMTP service so the project will involve setting up a mail server.
Note that by the time of beginning the project, there will be a CIFS file server with dedicated space for this project. There will be no local drive on the server. I'm happy to set up additional VMs if it's best to make separate servers for everything or if you need to create a virtual router. It's a big server with plenty of resources. It's important to take note now of the magic word which is Speedmaster, you'll need to quote this in your response so that I know you've read the project description and that you're not just spamming me. It's also worth noting that I'll also ignore any response written by or with the assistance of ChatGPT.
Keep in mind that as well as hosting my own website and software, I plan on leasing out some of the server's available run time to other businesses so that I can host their websites too, much like what TSOHost are currently doing for me.
I plan on starting this project in around 30 to 40 days from now and there's no real hurry to finish it, though I would like to have it polished off no later than September as I have goals to launch a SaaS product. Whoever I award this project too will (I would like to) become my network administrator as after everything has been set up, no doubt there will be some maintenance requirements. At the moment, I'm budgeting £250 for the initial migration and I'll pay your hourly rate for any maintenance after the server has been commissioned.
After your response, I will require a meeting with you over Zoom so to show you around my current Cpanel setup and the new virtual environment and so if you're a strong English speaker that would be ideal.
Many thanks