Sounds like an awesome plan! Of course you probably already know this, but I'd keep it short and sweet to keep everyone's attention. I think clear acrylic containers would be an invaluable addition, especially if you end up bringing a look, don't touch species. If you can find one of the small, clear tarantula enclosures, they're pretty cheap and would be perfect for a baby hog. I'm a huge fan of hognose, I think they're so cute and tiny that they make the perfect ambassadors for introducing snakes to squeamish people (or kids!) Just my .02