As a Creative Cloud subscriber you can switch language and plattform at any point in time as you want. Non cloud versions are older versions, 3 steps behind and I would not recommend them to buy now anymore.
If you run on a Mac, Boot Camp or Parallels are foremost for applications which are not available on the Mac but you need to work with it, like FrameMaker or MS Access. But it is always combined either with a loss of comfort (Boot Camp) or performance (Parallels). If you can get the native applications for the Mac you should use those (for MS Office they are available).