Hm I haven't had much practice with reading horaries but I'll give it a shot. The California chart has Jupiter in the 1st which is very beneficial but its involved in a T-square with Pluto and Uranus.
You may have to overcome some sort of power struggles and transformation.
Making sudden decisions and acting on the spur of the moment may not be the best idea as it'll bring you challenges and difficulties.
The Sun is also involved in another T-square with Uranus and Pluto :/
Hmm so far California doesn't look too favourable to me, for now that is. Maybe you can consider it in the future.
In the Seattle chart, you still have the T-square of Jupiter-Pluto-Uranus but this time Pluto is in the 1st house, indicating power struggles and transformation regarding your personal identity.
But you have a nice grand trine of Moon, Neptune, and NN and a kite formation of Moon, NN, Neptune and Pluto there to smooth things out and make conditions more favourable.
With Neptune and NN both involved in the grand trine and kite, this shows its a dream of yours to move elsewhere and that its in alignment with your soul path, its your destiny.
Sun is in the 9th house of travel
Moon is in the 7th
Asc ruler (Jupiter) in the 7th
So far Seattle seems like a much better choice for now!
Hope this helped
~ Lavender