Thanks for the nice chord shift concept! I always like a new way to find my way to the alt V dom. But in this case the V does go to the I, which itself is an expected progression.

The difference in my progression is that the G7b9 dominant goes not down a perfect 5th (or up a perfect 4th) to the C...

...it goes down a major 3rd (or up a minor 6th) to Ebmaj7.