I love the Spongebob Squarepants Pineapple hut! I kept threatening to get one because I've like it since I first seen it at the LFS, but my husband says that it won't fit in with our decor.
Your tank is looking good, but if I may suggest a couple of things?
First of all, I would get a background to fill it out a bit, and I would also see about getting some plastic plants to give you some colour and height vertically.
Otherwise I think it looks like a nice home for your F8.
