Re-skinning a roof

The way you repaired the a pillars on the truck is similar to the dart as you would need to leave the inner support extending out 1/4" on the pillar and the roof section so the support can be welded and the outer filled in.Seeing your work I think you can handle either way you decide to do it.That being said if your structure is it tacted where I don't believe mine was then skinning it may be the simplest way to go but time wise I think is a wash or maybe faster to replace the top with a solid plan ahead of time.