"We have less than 50 'registered' families."
There's the major part of your problem. When we were down around 65 pledging "units" we were up against it. I remember one year as moderator of the parish Geneneral Assembly telling the assembly that we were in the hole and bills were ue. I pulled out my checkbook and told them to get writing. They did and the bills barely got paid. Other times individual members simply paid, say, the light bill. Personally, I think 65 is about as low as one can go and still have a viable parish with a full time priest.
What you need to do is go to a pledging system in addition to the weekly collections (we have two) and even more important, grow the parish. The suppers and the festival and the annual Greek Dance attract all sorts of people and we pick up at least a family or two every year from the festival alone. We've also had a number of Lebanese families join over the past 6 or 7 years as they are still coming to America. I can remember years ago discussions at the General Assembly about how there was no more Greek immigration into America so the day would come when we would simply die out. We really thought that would happen. Well, a few new Greek families did show up, but the majority of the "new people" are converts (especially) or other types of ethnic Orthodox people from Eastern Europe, the Middle East or North Africa and Ethiopia. Now we are sort of a "multicultural" group.
I should think that growing your parish through conversions might be difficult, however. All of our converts have come from Protestantism or simply unchurched people. Roman Catholics don't seem to convert, which is understandable. We do have a Maronite woman, married to one of the Orthodox Lebanese guys but we just pretended we are in Lebanon and recognize the de facto communion for her! She was chrismated about a year after her wedding. :) For you guys, however, I should think that Protestants would either convert to the Latin Rite or become Orthodox all things being equal. The main source for people, I should think, would be Roman Catholics like you. But clearly your priest can't start on a campaign to "convert" Latins to the Maronite Church. That would lead to big trouble no doubt. In the end then, it will all come down to hospitality, to "philoxenia", friendship to strangers to such a level that people will want to be part of your community because you have a good community. It can be done. We did it, though it very nearly took a personality transplant to pull it off! :)
This will happen once we move across the river to Watervliet. In that community, the RC bishop just closed 5 of their 6 parishes. These residents are in serious pain. They know we're coming and are cautiously following the work at the future Church. In early April, the first sign will be erected in front of that church. It is the official NYS Parks sign listing the Church's name and Father's as well. Like a tulip slipping through the snow, that sign will bring hope to a community in mourning.