The team guys have been testing the .3 parts for a while now. And they have already wont some really big races with them. The kit setup should be a great all around starting point for most drivers. There is not a need to have this part or that to get this truck on the track. Im guessing.. An aluminum servo horn with the spline you need it gonna be about it. Maybe a few tuning options as you get to different tracks or conditions as with the case of any other RC vehicle.
regarding the "kick" off of jumps.. It most certainly is caused by bottoming off the face of a jump. But if you look at whats really happening, it usually caused by the front wheels clearing the lip as the rear is rebounding. Several fixes can help
1. bandaid fix is to add a stiffer rear spring.
2. Go thicker rear oil..
3. Increase ride height

all these will work to some degree, but have a penalty somewhere along the way. Usually in a loss of rear grip or unbalanced setup

Instead of changing the setup, why not change yer driving ? Approach jumps that have a short face or are high speed in coast / off power ( not max speed either) and squeeze throttle while going off the face. I am not an RC master, but this has worked for me on 95% of the situations I needed it to. It sometimes takes a conscious effort to tell myself to "let off the gas" before a big jump but when done properly it works.
Just sayin