ReferralCandy,
When optimizing your page for a set of keywords it's important to keep in mind that exact matches are most powerful. With that in mind, think about your customers and the order of the keywords they type into the search.
Are your customers more likely to google "gift set organic soap"
or
"oganic soap gift set"
In my opinion, the second one is more natural and probably a more common search query.
With that being said, the second URL makes most sense.
Hope this helps!
- Matt