Hey Volphin!,
How's it going?
All of these accessories are prepared for AC input. I would group them by voltage, power draw and location on the layout.
A cheap clamp meter from Harbor Freight would be helpful. It will take voltage and amperage readings by clamping around the hot wire.
I would group them electrically by optimum voltage, total power draw and physical location.
Connect each accessory one at a time to the variable input (A & U) and determine the optimum voltage and amperage draw for the desired brightness or operation. Note the voltage and amperage readings on the list.
Now determine where they will be located on the layout.
Each CW-80 will provide up to 5amps on the fixed accessory posts without using the variable A & U for track. Check the bottom of the CW's for the letter G in the code. If you have any without the G, let us know.
Now you can determine the electrical groupings. Hopefully, you won't have any issues on power draw total.
I would suggest using the 12 position MTH terminal block. Two wires to the block 14awg from the fixed acc posts on the CW-80 to the terminal block. 18-22awg to the accessory from the block. Each block is limited to 5 amps by the CW-80.
If you need different voltages to group them, the fixed output can be set on the CW-80. So, that's where having a few of them may be helpful.
Next, if individual control is needed, miniature SPST lever(toggle) or button switches in series with the hot wire from the terminal block to the accessory will provide that feature.
Many ways to light the Plasticville. I am a roll your own type LED. GRJ's kits from Henning's will work nicely.
That's my 2¢ on this.
email me if you want to discuss further.