Maybe it's a chick thing, but I love the rose gold with the white sport band. I'd buy it in an instant if the Apple Watch wasn't a tech toy that will be outdated the moment gen 2 is announced. If the warranty wasn't voided by plating the watch, I would actually consider plating my ss with white sport band in rose gold.
That said, I think gold with the white sport band will look great. I would definitely wait and buy a 2nd band and send that out for plating at the same time given they will do two bands plus the watch case for the same price as one.