Looking at your photography site (I'm assuming that's the one you want to switch over to image maps), I don't think it would make a big difference - it would still consist of all images, and there wouldn't be many benefits in the way a visitor sees the website.
But I think iMeowbot's suggestions are also a good way to go: add good alt elements to your images, and maybe, at the bottom of the site, add small text links (Home| Photography| Blog| etc).