Very nice job. From your description, I initially thought you might be a little too close to the instrument, but overall balance between the organ and the room is just about perfect for the piece and the players registration choices. I quickly stopped listening to the "recording" and found myself enjoying the music. Take that as a large compliment.
After a time, you may find that having is not so pleasing a thing, after all, as wanting.
It is not logical, but it is often true. -- Spock