As has been said, the best RC pilots use all the controls regularly. Start using that rudder now, because the longer you wait the harder it will be to get use to using it.

I was fortunate enough to have an instructor who insisted on my using rudder from the start, and I use it almost as much as I do ailerons or elevator. I seriously doubt that I ever fly more than 10 or 15 seconds at a time without some rudder input.

Good luck,
Dennis-