If you are going to get the system make sure you put it together by yourself. Don't get the kit.
For example by choosing the normal bags instead of the XStar bags for the rear lockers you will get more possible weight (750+ each) instead of 720 each for about half the price each.
As I'm just now in the process of getting my order with wakemakers together I would suggest to wait since I'll be writing a detailed report on here what I choose to do, how and why.
Oh, yes, you will be happy with having the possibility to add some more weight :-)