I am planning on ordering one of these myself as soon as I get my system moved. I have been talking to their tech support about the pump and setup, and here is what I have learned. It comes with a new 'Z' mounting bracket to house all filter canisters with the new pump, it also includes all hoses, and they said if I had any special concerns/requests, they'd be happy to modify this before shipping it out. They said this pump will actually increase the efficiency by ~85% of the RO system, as well as cut your waste water to near nothing.
for me it came down to water pressure. My house water supply is low pressure and I am getting too much waste water relative to product water (something like 6:1 when I should be getting 3:1 or 4:1). Plus with low water pressure your filter membranes don't last as long and it takes a long time to make water.
I will probably skip the permeate pump because I don't have a pressure vessel for my product water and my understanding is that they are not nearly as useful without this.