Given what you have said about the availability of maintenance support be careful of putting your new helicopter on the FAA register, you may find yourself jumping out of the frying pan into the fire. Try to do some due diligence and determine the availability of either an FAR Part 145 Repair Station with the Enstrom 280 on their Ops Spec or, a friendly A&P mechanic, preferably with an IA, who is Enstrom 280 qualified - and willing to travel.