To complete that list you better give yourself at least ten hours and make sure you have a place to dump your full tanks.
Your list is definitely comprehensive, but a tad excessive for me. I was able to check all of these things out over a two-day period while I camped about three miles away from my dealer. I went over several of the things you list during my PDI and found nothing wrong. I have had my Windjammer 3029W for a month now and I have still found nothing wrong.
I think you will find your Windjammer exceeds your expectations and you are going to be very happy with it.
Good luck and congratulations.
2016 Rockwood Windjammer 3029W Diamond
2015 Chevy 3500HD LTZ 6.0 Crew Cab 4x4 Long Bed 4.10:1 SRW