A few points that I hope will help

(1) put each photo on it's own post with some good copy - benefits not features, use the "all in one seo" plugin to help you
(2) I think you are spot on using craigslist - try other free sites too
(3) go for forums too, I think you have more chance doing this with web 20 than SEO
(4) open a twitter account with the right username and tweet the images
(5) put the photos in all the image sharing sites with careful text and labels and TAGS
(6) word of mouth helps too!

good luck

Alex