Go all the way to the limiter but be careful not to go over - you'll lose speed then, but if you practice it well - you'll be faster than before.
That's the common "problem" with 197 owners - they change gears at the light.
I know man...i'm talking about pushing on a twisty road,heel-toeing,left foot braking etc..,there is no room for perfect shifts during that..at least i can't do it...
p.s. Is the process of moving up the limiter difficult? Does it require a remap?