Hey Josh, I am also Josh, lol. I wondered if you had any issues with the wire nuts. I realize they are waterproof however, those are more used for electrical that is in sealed off boxes for areas with high condensation. I'm an industrial automation and controls electrician and we use those wire nuts in fish factories where there's a lot of humidity and condensation in the air. I just wondered why you didn't solder the connections and heat shrink over them. Right now as your rig sits, I imagine that if you did any real deep water crossing, you would risk shorting out your lights because those nuts aren't designed to be completely submerged in water.
By no means am I dogging on you. I love your build and I look forward to seeing more. That was just a thought that I had.