You will have to look in the box to see if there is white top. I always include all items if any is part of a fatpack.
Typically it only takes an hour to assemble an outfit. All I recall about this one is that it took me about two hours to assemble it. The majority of the time was looking for the right top (I hope there is a white one in there for you). It was worth the effort, but perhaps people could take a moment or two to leave a review and comment about the region...