I decided to just trim it out on the inside and outside and make a plastic window for it. I like the way it turned out. The inside having one style and the outside with opposite trim.
The next step was to connect the loft and the main floor electrical to make sure I had good connections from start to end of the tapewire runs. On the main floor, I installed a plug just above the floor, and on the loft under the staircase landing, I installed wires with a plug end. I also installed eyelets toward the top of the wall which the loft plug could also connect to. This way I have options when it comes to finishing and hiding the wiring.
After plugging the leadwire into the transformer, turning the power on, and poking the probe into several spots I had only one issue with a tapewire connection. Luckily, all I had to do was to replace the tiny brass brads with eyelets. This made a stronger connection, and then I had power all the way to the end of the run. Phew!
After the ceiling strips had dried, it was time to stain the wood floor. I just used a Minwax light oak color. It really only needed one coat and came out very evenly. After I had let it dry for several hours, I came back and applied varnish to the ceiling, bedroom wood walls, and floor.
Before the bathroom walls go in, it's a great time to add the towel racks, mirror, TP holder etc. It's much easier now with the help of gravity to glue on a flat surface and not try to reach into a 5 inch space.