First of all let me say that thinking about this so early just proves what a responsible cat mommy (or daddy?) you are!

It's not an easy decision to make, but I guess if I were you and Boomer would be in good health at that time, I would take him with me. The thought about having him for so many hours in the cargo would scare me indeed, but from what I've heard, there are airlines that allow a pet in a carrier under your seat. I'm sure others here know more about it and can give you helpfull advice.

All in all, I think one scary day for Boomer will be less traumatizing than having to adjust to a new enviroment AND a new family!

Kirsten