Do you have anyone qualified to service it? I used to work for a Mako dealer and we saw the most godawful maintenance on fire station compressors. The air filter is 100 bucks, the oil and oil filter is 100 bucks, checking belts and compression takes 20 minutes, taking apart the final seperator and checking the sintered filter takes an hour, and may cost 10 bucks if all they change is o-rings, or 100 bucks if you need a new filter. Travel time to and from is unknown, but many Mako dealers charge up to 50 bucks an hour travel time. Your Mako universal manual tells step by step how to perform these maintenance items, and in Roatan or Belize, some shop monkey does it. Would it be worth it for me? No, I am a Mako technician, and I have an installed spare if one goes down. All it takes is someone who is a shade tree mechanic, and not a hammer mechanic to perform this maintenance. It also takes continuity. You don't want everyone doing the maintenance, you want the same person over and over again. That way when something breaks (and it will) the Mako technician will have one point of contact to go to to ask what has been tried.
Good luck, and happy maintaining.