Yes Cometics are near indestructible, but instead of the gasket blowing you blow/melt a head, piston or anything valvetrain related. They also require a certain RA finish on the block and head.
For the combo you have listed I would go with the Fel-Pro 10111.
a good tune is the best HG. The "best" HG can still be blown if it doesnt blow it will take something out, there are guys out there making 700+rwhp with 9333 and 8548 REPLACEMENT head gaskets.