Congratulations on the work, I'm getting ready to do it too. A question please: have you covered the rear "C" pillars with fabric or painted them? If you upholstered them, did you have any issues with the thickness of the fabric?
I upholstered the c-pillars and had no problems due to the thickness of the material during installation. I even upholstered the plastic molding that connects the c pillars. Good luck with the works.