This past weekend was a good one. I got the side windows installed using the trim rings, turned backwards. I also decided to use putty tape to help the seal. Once it warms up I will tighten the screws further and trim away more excess putty. There is about a 3/4"-1" gap that I need to do something about between the window and the trim ring, but it can wait. I drilled and installed plexi for the skylight. I managed to not crack it while drilling, but when screwing it on I got 2 small cracks, so far they have not extended past the putty tape so no leakage. I'll keep my fingers crossed that they don't spread.
The trailer turn signals and wiring are installed. The interior lights, power stations and power inverter wiring are installed. I will mount the inverter to the underside of the countertop so it is not installed quite yet. The table is done, but not installed as I need to poly it with the counter tops (not made yet). I have decided to use velcro to hold the side vinyl walls in place and have installed most of the self adhesive hook side. The loop side will be sewn onto the vinyl.
I have added the lower exterior trim and "fenders". For the sake of time I used 2x2s for the fenders and some 1x5 for the trim. They are screwed and gorilla glued onto the sides. I need to touch up the paint as I intentionally goobered it on to try to fill some of the gaps where the GG did not expand to fully fill them. Last night I went to caulk the joint and this morning after a night of rain, much of the caulking looks to have been washed away. Will try again tonight.
I have one weekend left till our fathers day weekend camping trip and will focus on the important things like installing the front window, installing the plastic living hinge over the piano hinge, making the counter tops, and finishing the sidewalls. I also want to touch up the paint before we go. Here are some pics:

exterior

interior window trim ring

interior lights and skylight

"power station" and wire to power inverter

rear with lights and new license plate installed.

top closed and white caulking along bottom trim (before it was washed away last night)