Welcome to the forum. I had that exact speaker combination at one time and really liked it. The RC-7 and RF-25's are in different leagues, I wouldn't mix them. As far as the price goes, it's a little steep but not unreasonable. I wouldn't think 1300 would be a bad price. 600 for the 5's, 400 for the center and 300 for the sides. 1200 would be a no brainer to me.