Just stumbled upon this post, and really glad I did. Great job, Guy!
I've been going back and forth between building a teardrop, an adventure type trailer with RTT, or even purchasing a Lifetime tent trailer. Since I had concerns over my ability to do a teardrop and making it weather tight for my first attempt, I was leaning toward the Lifetime, but really had preferred to have the cargo not interfere with a quick setup (like yours doesn't). The Compact Camping Concepts trailers, but had the same concerns as you over the ladder access (and price, to a certain extent).
You definitely helped my decision. This looks like a great father/son/daughter project. If your still monitoring this tread, I was hoping I could bother you with some questions on your build. First, how did you determine the appropriate dimensions to fit the tent? Did you measure an actual truck, or did Kodiak provide details on critical dimensions? You mentioned A/C at one point. Did you ever give that further consideration? I was thinking of trying to adapt a window A/C with ducting and figuring out a good way of pumping that in from outside via vents somewhere in the floor of the sleeping deck. Gotta do some more searching here. I know someone has some great ideas on that (seen a few already).
I think I might do something more like and adventure trailer, with maybe a slide out kitchen and storage, along with some other ideas from the great members on Expedition Portal.
Once again, great build! Thanks for posting this.