@ Catorce14
If I where you, I would try to put a little more money on the table to get a nice GivSP or maybe even a G450. Also a Challenger 605 would do it. The early ones are quiet ok pricewise at the moment.
Concerning the Range, both aircraft will do approximately the same. A decent range to plan for the 605 is around 3800NM depending on the wind.
Go for a european aircraft as most of them comply with the upcoming regulations already and you dont have to spend additional money to upgrade for ADSB-in/out, FANS A-1 and so on.
According to my experience most of the US aircraft need to undergo this refitting and upgrade to comply with the new regs. Maybe a point to push the price. Your choice.
All the aircraft my previous company sold, went to the US and Mexico.
Just my 5 cents.
Enjoy looking for and flying in your new toy.