Many thanks for joining in the discussion @Nat76. Let me tag the wonderful @LePallet so he is alerted to your post. I know he often works without plans, but I'm sure he'd be more than happy to help you recreate the bench seat.
Have you had experience making pallet furniture before?
Let me extend a very warm welcome to the Workshop community. We're thrilled to have you join us and look forward to reading more about your projects and plans.
Thanks so much, I have no experience, this is a BIG first project.