I hear it takes weeks to do properly. I’m not a road building expert, but there are many things that go into it, and stuff needs to cool of and consolidate.
Can’t do a lot wrong with Linux mint I suppose. Stable software so support should be good, cinnamon doesn’t have too much fancy stuff that would use up ressources iirc.
It’s my top recommendation for beginners, might switch back to it some time.
Just in case you are on a desktop and using qemu for local virtualisation, I would recommend you use virt-manager.
Besides that, set up spice or vnc daemons in the guests, as others have said.
Just in case You’re virtualising Kali Linux, use their provided qemu image, you won’t have to worry about it. If you don’t know what Kali is, don’t use it.