That get's my vote for what your problem is. Your suspension components are fighting each other.
Just curious, why are the shocks mounted in front of the axle?
Generally, gas shocks are stiff and are used in handling applications. On launch, the car wants to plant the rear but the shocks are resisting and forcing it back which unloads it and causes the wheel hop. You probably want a softer shock.
Do you have a pinion snubber? That might help. Also clamping the front section of the springs might work too. Old school tricks..