I got a hp elitedest 800g3 with a quad Core i5 6500 3,2ghz to 3,6 with 8gb ram

my current setup is a pi4b with a external raid enclosure running openmediavault and a bunch of other things

so no i am wondering what to use the new pc for i just slapped proxmox on it to decide later i think i am goingt to put the drive into the pc with sata and use openmedia vault or another nas os for software raid since hw raid isnt there wihtout the box (i think) so should i add a omv vm with a lot of power and in this like the jellyfin container and other stuff but then with caontainers i could use omv in the first place so i dont know what to do i could try true nas but i dont have any experience with it same with proxmox

any tipps on how to migrate from my pi and what the best use of the two together would be and what os or vms i should run on the pc

thx in advance