I saw your post and took a look at your site, which is looking great. I am also working to make a website (not a blog) using the oxygen theme. See what we're working on so far at waterecuador.wordpress.com.
We are interested in having an image slider on the landing page also, but we don't want to have the other stuff on the Showcase page that makes it look like a blog. We also don't want the images on the slider to be tied to blog posts. It seems like you figured out a way to use the slider and draw off images that aren't directly tied to a blog. I'm hoping you can point us in the right direction to get this done, too! Did you have to pay for the custom version to do it? Did you have to do CSS editing?
Thanks so much! You can also email me directly at [email redacted], if that's easier for you.