That sounds like a fun project & really great music to play!
I caught Brian Auger a few years ago: he was amazing see live, especially after listening to all his albums & session work over the years.
Did you know he played the harpsichord intro on "heart full of soul" by The Yardbirds? it's a funny story, he talks about it on youtube somewhere.
Congrats on the NGD I always liked that cutaway on a millenium. Beauty!