Reply to How do/would you map 2X Kontrol X1's with the S4

So I'm about to pull the trigger on an S4 in anticipation of Traktor 2 and I am fortunate enough to have 2 Kontrol X1's.

Now I'm just wondering how I should map my X1s to go with it. I will be using two sample decks and I would like to have full control over them.

So I am looking for mapping ideas and I'm wondering if anyone has mapped two x1's for it or has any ideas. How well does the S4 control the sample decks as is? I want to be able to control volume/filter with dedicated knobs so I'm believeing of putting them on the knobs of the X1's. I just don't want the X1's to be redundant in the setup so I don't want many control duplicated which I'm not sure if it will be possible. Is two overkill? How would you do it?

I'm excited for this thing. I would also like to know if there is room in the back of the S4 flight case for a power strip and usb hub. Since I will prob be using 2 X1's they need a hub since the macbook pro only has two usb ports and the S4 needs a dedicated one.