I have very similar experience to what your looking for. In my current position, I hold the responsibilites that I'd have if I were to be offered this job.
I have several years of office experience.
I'm very well organized, and able to use my time efficiently.
At my last job, my responsibilities included many of those required for this position.
I'm a bit of a perfectionist when it come to efficiency. I'm punctual, and I feel compelled to finish the work I start.