IMO you're already compromising what the R&D have done for you on the FRP... If you're happy with it handeling wise I would leave it, do you track it?
Changing springs on any fixed dampers will limit the amount of suspension travel available (obviously) so then your roll bars aren't well tuned with the rest of your suspension really hard cornering can lead to stroking the suspension to its bump stops, effectively giving you no suspension compliance... this is IF you are tracking it, I doubt you fell the FULL use of the suspenion on the road anyway.
And factor in the lower centre of gravity, you can get VERY anal about it, granted. But you obviously clutch at the FRP's best straws hence why you have one over a Puma/