2011 MacBook Pro. Thinking about going to Windows fulltime through Bootcamp... I use Solidworks and Keyshot a lot and Parallels ain't cutting it, plus dual-booting with files on each side is annoying. I will probably keep a small partition with OSX on it for updates and incase I want to go back. Is this a good idea? What's recommended? Windows 7 or 8.1? Will I be able to update to Windows 9 when it comes out?