The decision has been made. My husband made a second trip down (staying for two weeks) and we will make a permanent move in June. Our kids will go to DIUNI school next year. We want to have them finish out the school year in the states and then come during the summer so they can take Spanish lessons. This should give them a head-start and not be so overwhelmed with the new environment. We thought about moving in January, but this makes much more sense.
It will be an adjustment for sure but all should go well. There are so many reasons you should be thankful for. Good luck,