Once I get it all done,I will post a picture of my truck.
Congratulations on taking that step!
Don't keep us in suspense, put up a picture as is
Here are my thoughts on your questions, the pro's may have better answers.
If you can, get it in the sun. Doesn't have to be warm or sunny, the UV is what matters.
A week seems to be the minimum that I've heard to pros suggest, to wait for cutting/buffing.
The tech sheet says overnight, which is OK, but longer seems to be better.
For the run in the trim line, that can be challenging. I would make a small sanding block out of wood or similar, small enough to get in the area, but with a flat surface for the sandpaper.
I would also use a higher grit than would be normally be used on runs. Say 1200-1500. It will take longer, but be safer in that spot.
On the actual edge, go very, very lightly and carefully, with the block surface on the drip/run and parallel to the panel, if that makes sense.
A sand through is a real headache. I might be willing to live with the "ghost" of a run or drip rather than risking a sand through, if it is a driver and not a show vehicle. That's just me.