You may have already spent some length of time on the Acadia/Outlook/Enclave forums or just know this anyway, but in case not, just realize that the aftermarket world has not been kind to our 6x132 bolt pattern. You can definitely find wheels that fit, but they aren't the most cosmetically appealing IMO. Considering the Traverse is still somewhat *new* relative to its GM siblings/cousins, and at least in my area seems to be mostly women owners, I don't see too many going the route of aftermarket wheels yet.
If you find a set of wheels you do like, call the Mfg and see if they can "custom-drill" the wheels to the Traverse Bolt Pattern with the proper offset. That is what I had to have done and a few other Acadia owners have done the same.