I had the luck of being overqualified for my first job, straight out of college. I did X (CAD), but I chose my career because I wanted to be a developer. I did Y (sysadmin) because I showed my employer that I could do more. For half a year I did X+Y for the salary of X because I was young, optimistic and eager to please... until they hired a real sysadmin because surely he could do Y better than someone who does X and Y on the side.

From this I learned that being overqualified is a risky proposition. Even if your team appreciates the added value, your company might have other plans. I believe it's better to tighten your belt and wait for a more suitable opportunity than risk hurting your career growth.

BTW, your phrasing is perfectly fine. Try to read mine.