That case is a little aggressive looking for my liking.  I'm more into sleek, 
modern simple designs 
like my Lian Li case.  But it seems like a nice enough case, and if that's your thing then I'm sure you will be happy with it.
As for moving parts into a new case, I don't really have any advice.  It's basically like doing a new build except all your components will have dust all over them.
As for SSDs, I didn't know you could only install the OS on there.  I haven't really looked at SSDs very much since they are so ridiculously expensive.
Edit:  Sorry, I didn't mean "modern".  That implies that I think your choice isn't modern, which isn't true.