For the most part, this is an excellent case and it will most likely go to SCOTUS. I had a conversation shortly after Heller with someone who was involved with the NRA, they said that no one cares about the territories. I told him that they are golden territory (McDonald was not filed or ruled upon at that time) due to the lack of incorporation.
It amazed me and it showed me how ignorant even an NRA lawyer could be.
It's funny, too often many people say Puerto Rico is a corrupt 3rd world island... yet they seem to have more honest judges than most of our circuits do.