Questions about CM stacker case

Ok I'm looking for a good case to put my watercooling setup inside (double heatercore) and just found the colermaster cm stacker case. So some questions:

What about the optional cross flow fan is it worth it? Can someone have pictures, because I can't figure where it is placed in the case. If this thing is good for cooling memory, then I'm interested, but I want to know if it will take all the place I need to put my WC setup....

Thanks!