Hello, i want to get into the self hosting game and have some questions about it. I hope that this community may help me (i already learnt so much by reading posts in this community).

1. I want to self host an NAS and some home server applications like Immich, Homeassistant, Jellyfin and parts of the *Arr stack. Would it be advisable to get a mini-PC and a separate NAS or can i put this on the same appliance together? Was thinking about getting a NAS from Terramaster and i am not sure if i need a separate mini PC.
2. If i would go with the all in one solution, would TrueNAS Scale be enough? I saw some recommendations to get Promox and run TrueNAS Scale for the NAS management and Promox container for everything else.
3. If i would go with the separate solutions how would i handle seeding? Since the mini-PC would run the *Arr Suite with qBittorrent would it be able to download directly to the NAS and hardlink the stuff there or would seeding require two copies, one on the mini-pc and another one on the NAS?

I hope my problems are clear, i tried searching for it but did not find a satisfying answer, which is why i am asking here. Thanks in advance