If your going to open up the motor then do it right, Pistons, rods, w/ gasket.
But I would lean away from all that if you have low miles on the car or you are looking for reliability as a daily driver. In that case 2ply gasket would help bump it to 11.0-11.2 Just remeber that wich ever way you go "Tuning" is the key to get the best performance.