N reg isn't a good idea ATM, the Federal Police confiscated a number of high end executive jets back in June during a country-wide operation, and arrested several owners. They were abusing the regulations that allowed the temporary operation of foreign registered aircraft, mainly to avoid paying taxes.
One other thing to remember is that flying schools here turn out thousands of shiny new pilots every year, many of them willing to work just for hours flown, and all of whom are legally able to fly here at the drop of a hat.
Sorry to say it, Mike, but this possibility looks like a non-starter from this end.
TTFN