OOof. Ouch. :-)
So... about this thing were you've never before been further west than KS...
The good news, is that you'll now be travelling exactly as far as it is possible to travel without leaving the continental US: Miami to Seattle. Further, even, than Boston to L.A. By quite a bit.
Her eyes grew HUGE and she said "That's a LOOOOOONG way, Mommy! That must take YEARS to get there!"
*laughing* WIth my fear of flying, I'm sure it'll feel like years!