Linux is a good way forward if you want to try it and keep the fireface. Ubuntu is not my favorite base, but Ubuntu Studio (I’d suggest the LTS if you don’t need the latest and greatest all the time) is nicely set up, but I’d make one change from their preinstalled and I’d use Reaper over Ardour, but thats me.

Your biggest headache will be plugins if you’ve got a ton of vst’s, not all will work on linux.