Just a suggestion but have you tried making the background all light or dark? The verticle spacing on the type is way too dramatic and the arch is very ugly. Not trying to discourage you or anything, but arches are never used by designers (well, not NEVER but very very very very very seldomly). Try fooling around with the typeface itself.
You have limited type but the typeface would probably be better. Serif is probably the way to go, but it's not as legible as it is now. TYpography is one of those things where when you get it, you get it. But until then you're in the dark.
