As a clarinet and sax player, I was really interested in this until I saw the bit about being charged $60/year to rehearse with no concert schedule to speak of yet (except the caveat of two per year). I love playing, and I love video game music, but getting charged to drive to Rockville once a week with nothing to show for it is a lot to ask musicians. All the community band/orchestras I've ever been in derive their funds from the community supporting them, not the artists who are already volunteering their time and talent to make the community better. I might consider submitting an arrangement, though.
Gripes aside, best of luck with the group. I hope to catch a concert.