I would like to use Nvivo for Windows on my mac (they have a mac version but it has less functionality) so I'm considering getting Parallels. A couple of questions: 1. I'm on a Macbook Air 2014, 8GB ram, 256GB storage. How much should I devote to the windows section of the drive? The only app I want to run at the moment is Nvivo. 2. Any thoughts on which windows version to go for? Thanks!