My first impression is it's a lot more of a 3D fun-fly than a pattern ship. There are maybe two pattern type traits that I see, one being the swept back leading edge of the wing, the other being the planform of the fin. Other than that, it's short coupled like a fun-fly, has low aspect ratio wing like a fun-fly, big control surfaces everywhere like a 3D. I won't speculate as to how it'll fly, other than to say I'm sure it will be fun to fly. The nice thing about this kind of project is that you start with anything that flies and then modify it from HOW it flies to HOW YOU'D LIKE IT TO FLY, and that's how great models are developed. There's a very serious pattern flyer in my district who has designed at least one profile pattern plane--more or less for the same reasons you give--so there's nothing wrong with the basic idea. Developing your own design is great experience, so more power to you!