You've made a great start! What a difference some paint makes eh?!
I'm looking forward to seeing how this progresses as I have just bought a house with an almost identical attached garage and need some inspiration. What are the internal dimensions?
It's going to be tough though, I'm moving my gear from a massive barn to a 9'x18' garage. Hopefully I'm going to build a shed to store the air compressor and some of the larger tools (hydraulic press etc.) Have you thought of doing something similar?