Thanks, guys. I didn’t realize the curved sections had terminals under them. I think I’ll run a feeder to each “corner” of each loop - 4 drops per loop. Maybe 2 more on the longer sides of the outermost loop. I picked up the .001 spade connectors or whatever that size is, so I can make feeder wires w/ connectors. For the future layout, I think I need to pick up some soldering skills.
@SteveH Thanks for the detailed info. Hate to sound like a total newb, but can you break it down a little more for me? 
After reading your input, here’s what I was going to do. Let me know if I misinterpreted or there’s a better way …
For the turnouts, from an accessory channel [C] on the ZW-L, I was going to set the channel to 14 volts. Since everything is being run off of the same transformer, I don’t think there will be any issues with phasing. I’ll feed a hot wire and a ground to 2 separate bus bars. Each turnout will be tapped into a hot and ground respectively on each bus bars.
When you mentioned “Switch grounds should be tied to track common at the main distribution point near the transformer…”, I wasn’t sure what you meant by the main distribution point. Will the bus bars do the same thing?
