Reply to creative controller set up/ worst idea ever?

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Seriously how bad an idea would this be...? After picking apart what I like and don't like about the S4, I came up with this as an alternative.

It would save a couple hundred dollars, and I'd have to buy a sound card.
I would also have to build some kind of case that would hold it all together.

I'd be doing a 4 deck set up in Traktor.

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So far my plan would be:

I'd just be running the instant gratification mapping on the midi fighter. (never used one before, but I'm assuming I'd have to use the top 4 buttons to control which deck the midi fighter is controlling? true?)

The crossfader on the right standalone jogwheel controller would be the main crossfader. And I'm believeing the left one would switch between decks A/B and decks C/D.

browsing, EQ, filter, cue points, looping and tempo all would be controlled by the two nanokontrols. Whatever buttons, faders and knobs were leftover would go to controlling FX.



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I'd have to use a powered usb hub, I know that.

What about midi channels... Has anyone ever tried using 5 different controllers in traktor before?

Are there any issues that I'm not seeing here...?