Only CWD God Ring is free spinning in that combo (which is ok, because you definately don't want to put a free spinning CWD in that RC). Since you're using a BCC combo, you might as well use a heavier AR like Samurai Upper or Jiraiya Blade (there isn't much of a point in using BCC if it's not for weight).
I'd still prefer to either go with 2xBCC CWD plastic parts for overall bulkiness, use CWD Defense Ring with BCC CWD to change modes manualy or just stick with the fixed Free Crusher smasher (assuming you might go for attack).
Even weighting less, I think BC2 is still the best for defensive combos.
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