Basically by opting for the larger rig specs I overpowered the boat for a 147 kg crew by 112% in relation to a 155 kg crew on a F18.
For the 130 kg viper the overpoweredness is reduced by 4.8 % to about 107% overall. Therefor the viper will establish parity with the 155 kg F18 crew at 154,9 kg themselves.
Wouter