Lookin good!
What will you use to seal the gaps at the front and rear due to the ribbing of the van roof? Also, did the sides just luckily happen to both land on high parts? In other words, was the pop top the correct width so that the long sides of the fiberglass rest on the peaks (as opposed to valleys) of the roof? Same for the inner footprint for the tent?
Also, is the front support arm bracket just attached to the sheetmetal of the roof? Will that be strong enough if it is not at a rib? even with a roof rack and gear?
Lots of questions