K & W HO Scale Model Railroad, Construction Update #19 - BNSF yard wired and works! What's next?

This is a bi-weekly updated (usually every other Friday) record of the construction progress of my model railroad layout. Details are listed below:
Scale: HO/OO
Design: Triple deck, around the walls with a peninsula and two helices
Design Inspiration: Layout style around-the-walls - David Barrow's Cat Mountain & Santa Fe Location - El Dorado, Kansas to west of Canon City, Colorado via highway routes: 254/400/50
Era: 1980's to Modern Day
Roadnames: Missouri Pacific, Southern Pacific, Denver & Rio Grande Western, Santa Fe, BNSF, Union Pacific
Style: Prototypical-Freelance
Size: L-shaped room, larger leg is 26'x15', smaller leg is 14'x5'
Construction: Combination shelf and box frame
Materials: 1/2" plywood base with varying thicknesses of extruded foam board subroadbed, over 1x and 2x lumber frame
Track: Atlas Code 83 in Staging and helices, Micro Engineering Code 83 on the main lines, Micro Engineering and Walthers Code 70 everywhere else
Minimum Main Line Radius: 24"
Minimum turnout frog: #6
Lighting: LED fixtures and strip lights
Operating System: DCC NCE PowerCab with booster(s)