That looks like a nice kit. Well packaged and they haven't "overdone" anything. I also like the coating on the eye, nice touch.
As far as rating, IMO there may be a bit on the heavy side. Generally in a kinetic rope you want 3 times your vehicle weight as the rating on the line. So if your rig weighs 6000 pounds, an 18,000 pound rope will usually get the job done. Going up to a 21,000 or 24,000 pound rope wont hurt to bad, but the higher the rating, the less elasticity you will impart to the rope. i.e. if you can not stretch the rope, you will not benefit from its kinetic properties.
With a kinetic rope we are working on the exact opposite principle as a winch line. We want our winch lines to be static with as little stretch as possible. With a kinetic rope, we want as much stretch as possible without breaking the rope. Think of a rubber band... A small rubber band is easy to stretch and breaks easily... AS we increase the mass of the rubber band, the point at which it will break increases, but so does the energy required to reach that point. A 7/8 bubba rope is rated at 28,600 pounds. Based on the 3:1 ratio, your rig would need to weigh 9,533 pounds to use the rope efficiently.
Now granted, the 3:1 ratio is just a guideline.... But bigger doesn't always equal better in a kinetic rope. To big and you will not be able to stretch it. It will act like a tow rope/strap.
When I could get the material without having to put my kids up as collateral, I used Samson Super Strong. It is a Nylon double braid with the core and cover both being nylon. I believe MP uses a product from Yale called "Yalon." Both are mooring/dock ropes used on boats.
