I would go with what's in Post 37
Don't use rose hips, to my knowledge SA doesn't use them, they're not listed on their site. I used them as a "sub" for Hibiscus because LHBS didn't have any of it the day before I had planned to brew. Other than that the recipe will get you very, very close. I would go with WLP 008, I would put money on them not using a Wit strain, I think you'll still end up with a fine beer if you use a Wit, but it will be different.
In mine the rose hips stood out, but Hibiscus will be more subtle allowing the spices to mingle better. To me in Cold Snap none of the spices really stand out. Hibiscus tart and fruity(cranberry with some lemon/orange), where rose hips are floral and not much citrus. I think this is why they stood out as much as they did because the other spices are either citrus in nature or cause the taste buds to detect sweetness(vanilla, prunes, and tamarind), where the rose hips are floral and played a contrasting role instead of complimentary.