I think the more important question is how serious do you want to get with the racing.. ??? If you plan on going out a couple-three times a year, I would recommend leaving it as is.. The car is a monster with lots of HP and TQ...

If you plan to race it a little more than a few times a year, I would recommend leaving the TC where it is and first try lowering the rear gear.. The car obviously is lacking out of the hole, so I would focus on improving the 60' time first.. and let the motor pull you down the track..

Nice car !!!