I've been working on this for a while now and finally have it worked out. The Ark topper is something that I felt was a natural fit for Indy. I'm planning to install a light strip on the inner edge which I think would look awesome illuminating the angels from below.
Would love to hear comments. I'm hoping to offer this for sale in a small batch run, but just want to figure out the lights and a cost that will cover the time these take (and have taken to get to this point).