Wow. How exciting! That's gonna be some sweet ride, Dan!
You really *did* do a super clean job with the insulation, Bro'! Way to go!
I hope you didn't use 3M Super 77 ... it will *not* hold up in the cab -- especially overhead. What you want to use, exclusively on interior stuff, is High-Temp adhesive.
See Here I saw that vinyl hanging over the door, too -- nice colors! Are you gonna be sewing all your own stuff? I just bought an industrial sewing machine and am loving the process! I'm sewing elk hides for my truck:
See Here