Have not had too much time to get into the shop the past few days.
I did manage to get things deburred, scuffed and cleaned up. I assembled the right tank to make sure everything lined up nice for final sealing and riveting. I decided to go with the seal cleco 24 hours and then rivet. I have worked on a number of heavy pressurized aircraft in the past, and we used this method with great success. I will let you know how it works.