Alright. I run some pretty successful channels with black hat, maybe I can help you.
It sounds like you are early in the game and are overthinking things. When I first began with view buying thoughts like these simply never passed my head. Have you received any strikes before? Have your videos ever been reprimanded by YouTube?
With view buying, likes, and comments there is a strike if you get caught. You won't automatically get your channels banned from the system. Likely you will have sometime to adjust before the worst happens.
Still I get the feeling you may be over worrying, perhaps I am wrong.
Yes, if you are willing to fight the learning curve then creating multiple virtual servers can help. However, running multiple youtube channels I never found the need for this unless I was running live streams. OP, let me know your situation, if you've ever gotten a strike, ETC
As said before, if you wanna go the VPN route - this is gold.