You are definitely starting to get into more complex shapes and I think that model is very interesting. It is an extremely complicated shape. I believe you are on the right track there! As one designs more and more objects, there is a natural tendency to increase detail. Nothing wrong with that. Revisit the model in the future if you don't feel like doing it now, and you will probably create something you are satisfied with. It looks like the basis of a really unique,cool looking car. Unique is good!