Did the veneers actually impact your bite? I only have four upper veneers myself, and the bite wasn't impacted at all. I think that tooth show at rest has to do with the lips and not with the length of the teeth unless the bite itself was impacted by the veneers. Unless you had veneers on your molars that actually built up the teeth vertically, I don't expect that your bite was impacted by the veneers. I think it's also good to get the specific (mm.) amount by which different surgical movements will be performed in advance of any surgery.