Hmm, that's a good point It does look great, but that'd be a shame if it didn't hold up. As far as bed line, this stuff is great. I put it in a truck bed that I mildly restored and it looked great. Similar low-glass textured finish.
Great build! That 3m undercoating looks fantastic too; almost like a wrinkle finish. What's the 3m part number for it? I'm planning on doing something similar.