Growth is GOOD, but it sounds as if, based upon your parking situation, you might need to transition to having additional instances of the worship service if you grow much more.
Yes. Our previous rector held two services, an 8 AM said Mass (no music) and a 10 AM regular Mass (with music); this is quite common, you could even say "traditional" in Episcopal & Anglican churches. A format found in larger churches is 8 AM said Mass, 9:15 and 11:00 regular Mass. I grew up in a church that did the latter -- a problem was that the three groups of parishioners often hardly knew each other.
But we're looking at a different solution, based on the fact that some of our folks come a long ways, either from the north or south. (Seattle geography dictates this.)
We're building up a group of "lay readers," laymen who are taught and licensed to conduct the services of Morning and Evening Prayer, and with such we will hopefully be able to form and serve a mission somewhere around the northern or southern limits of our range, with lay readers supporting them generally, and rector or deacon at least once a month for Communion.
The numbers of organists in our midst, for way too many years counted as "one", is increasing too so the music could also be covered until the mission grows sufficiently.