Is there potting mix in there somewhere? Hoffa?

[tryingtoflower]

Today I stopped by the nursery and found a marked down,huge zygo. Since it's a new genus for me I was intrigued. For $10 I bought it. I think it's a zygo?? Anyway, when I got it home I saw it was horribly root bound and have been working at finding the media in this huge mass of intertwined, healthy roots for hours now. My question is how snug should this by in the new pot and is bark O.K?

Thanks for any help.