With the rockers and 3.4/3.5, you can potentially get 13's.
Cold is going to be tougher to hook tires, and give you more power based on temp. Arrive early, lay bags of ice on your SC and throttle body. Then pull at least one front wheel speed sensor connector apart. Next.. read up on the cable mod or find yourself a set of spring blockers from the GTO's. Arrive at the track on fumes (put spare gas can in trunk with say 2 gallons), Since you are gutting the car, that's likely to drop say 200-300 lbs aka 2-3 tenths if you drive right.
That covers weight reduction, cooling the SC to hopefully bring down your first runs cylinder temps slightly, torque management and weight transfer.
Practicing your launches on the street is very different, most guys get to the tree and excitement takes over. If you can keep from launching in a cloud of smoke, that'll help.