I'll just add that you should consider using either a single F1, or B1, or B2 as a center speaker instead of the C1; if they can be oriented properly in your setup, etc. I'm not saying that the C1 is really bad, it's just that SOME people prefer using a single bookshelf speaker (B1 or B2) over the C1. If you search the forum, you'll see the various opinions on this subject.
good luck.