Truthfully there are bigger programs who have a billion applications and you probably won't end up on the top of the pile without it. In a smaller program that may not be the case. I would say this is going to come down to your willingness to leave a metro area and find a more rural job if available. You can always work your way to a larger school down the road.
That being said having DCI experience does not guarantee a program is going to become a powerhouse. Many times that experience does not translate well into teaching high school marching band. Take time to network with band directors and volunteer in schools. A great teacher will usually rise to the top no matter what.