I currently run my plex server and home assistant via docker containers on my Synology DS218+ but with all the other containers i have running things are slowing down.

I've acquired x2 8th gen intel i5 with 8gb RAM NUC's from a house clearance. My question is, would i be better off taking out the RAM from one and just using one NUC with 16gb RAM or should i use both, one for HA and one for Plex?

I realise it might be a little overkill for HA but i would like to run the OS rather than a docker container.

If i'm putting both on one 16gb device, what would you suggest the best OS would be? Shall i run up x2 VM's on proxmax or is there a better way? Also, what configs for each VM would suit best?