For the next guy out there sweating this out...here's how I did mine. I can tell you no one will do it quite as carefully as you will

There were varying opinions on how to trim and seal the vinyl top at the drip rail/molding. To fold it over or trim it at the edge. I folded it over and sealed/glued it with 3M Super weatherstrip and gasket adhesive... $9.69 at your local parts store
I carefully thinned the "doubled over" seam section of the vinyl on the A pillar. The exposed portion you can see is unaffected. I used a razor to thin it down to a single ply and sealed it well.