Turtlewax is not your grandpas wax anymore. I've had awesome luck with the ceramic graphene paste wax. 30 minute on/off time for the whole rig and trim overlap don't matter. one application beads up after 6 months of weekly brushed car washes
Just my preference but if white letters are the only option they go inside and use a sharpie to black the letters out. IMO they look bad on the inside especially on trucks where you can see them every time ya walk by