Hi! The thin size looks nice in your stack.
If it were me though, I would stay with the RG theme. Your stack is a busy stack, but what ties it together nicely is the RG theme. To me, when I see the WG bangle, it breaks that theme. What I see now is a person who wants to wear all her bangles on the wrist. The single WG bracelet makes it a bit hodge podge looking because it's four RG bangles and one WG. If the ratio were different, it might work better. I hope that makes sense. It's my opinion of course, and in the end, it's what you love that matters.
Just my two cents... I vote yes, but in RG! Hope that helps in your decision.
ETA: By the way, my other two cents is I think you can wear the classic Clover in this stack. Your stack is bold, and the Classic Clover will really pop in this bold stack. So my vote here is unless you really love the Sweet Clover, maybe try the RG Classic Clover and see if you like that.