Nice photos, by the way! I think either way is fine, depending on your approach.
If you link to just one, make sure the first picture is the BEST overall view. Sort your pictures so that if people don't look at them ALL, they still see the best (or most favorable) ones first. I would put #13 or #16 first, or take another that's the same as #16 but from the front.
On the other hand, some users might not notice that there are more pictures there, or take the time to page through them all, so giving them the thumbnail view first would let them jump right to whatever they're interested in.
Occasionally I've clicked on one of those "supersize this image" links that goes to an outside image-hosting site, and I don't know that I've ever seen one with more than one picture -- if they were there, I didn't pay attention, I guess. So maybe the thumbnails would be best.