Dan, I can't recall if you are running conventional (transformer controls) or command (Full power to track and Legacy/DCS to control the trains).
The other question is do you already own the z-1000, or are you kicking around ideas. there are other options that may be better suited to your needs, but if you already have a z1k, it would be better to use it than to buy something else. so, what transformers/ controllers do you have already?
JGL