Welcome Robert, get ready to get "Hooked" on this forum!!
There is so much to see and to learn from the wealth of sharing available here.
You might keep in mind the K.I.S.S. system, and that a tear drop is just a step above a tent, as so many have stated in here. (I also need to keep that in mind and stay focused.) The simpler you stay, the sooner you will have more fun camping.
I have over built on my first build because of the heat and humidity in Florida; needing insulation for the A/C. You can see that in my build photos.
The kids will have a blast helping dad build. Above all, you, have fun.