My opinion - Your botting account will definitely get banned, eventually. I wouldn't get attached to it. If I were doing it, I would open a guild and use the guild bank to launder the mats through to your main. If I were doing it that way, and botting a separate account, on a separate computer, I wouldn't worry much about my main being banned. Just doing post hundreds of raw mat auctions on the AH, on your main.
This is obviously just an opinion based on my experience over three and a half years. I've never had an account banned just for being associated with a bot account guild bank. I've also had the same guild since 2012 and never had Blizz clean it out when a bot account gets banned.
It has to be said, and I'm sure you've heard it over and over again, if you're worried about getting banned, do not bot. Eventually, it seems like everyone gets caught.