New Setup Help: NAS within Ubuntu server vs independent NAS; Docker vs VMs

[teiva 18]

I'm as green as you can be for a linux user but eager to learn. I'm also a general newbie regarding setting up media servers. I just upgraded my PC so I can finally start a home server setup. 

 

Requirements:

+TV live streaming (ota)

+Local/remote media streaming

+..possible web hosting in the far future

 

Hardware

+AMD Phenom II x4 955 

+...other leftover pieces

 

I'm trying to weigh the advantages and disadvantages....

1. Should I use my Ubuntu server as a NAS with something like SAMBA or should I just grab my buddies QNAP NAS? Is there something better than SAMBA?
2. What setups/apps should I be considering for backing up my drives on my NAS?
3. My sense from reading is there's a preference for dockers over VMs since you can share OS resources. Assuming I'm using my Ubuntu server as a NAS...What would my docker setup look like? Would I have a separate container for NAS, emby server and web hosting. Which container would I keep apps like Sonarr? 

I'm still confused how all these pieces fit together let alone listing out everything I need.

 

Any kind of information would be much appreciated. Thanks in advance. 

Edited August 12, 2016 by teivalp