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Yes you can run a bead of silicone along the trim. You can use the method that I share in this video.
https://laminateuniversity.sothatshowyoudothat.com/how-to-caulk-a-bath-tub/
I did not hesitate because the direction you chose, I was just looking at it as a coin toss. I think that you chose correctly and there really are not any pro’s or con’s to which direction you decided to go with in this particular install.
I know I gave you a lot to follow in the Installation Blueprint, so just break it down into smaller sections and use it as you move forward.