Reply to Pioneer DJM 700 and X1 or new S4 controller - Dilemma.

Hi guys, looking for some advice on this one

I have an DJM 700 in the UK totally un-used (I work abroad) and when i'm abroad I use a Hercules with Traktor Pro.

Now the Hercules, in reality, aint really up to the job but I have a few gigs coming up abroad and I'm believeing of taking my Pioneer with me and buying an X1 controller to go with it.

I really like the look of the S4 though, and I'm wondering whether just to settle with the Hercules just now, and get the S4 in November.

However, that will leave me with a wasted DJM 700 that I love.

Also, what would I need for a hook up with the X1 and the Pioneer?

I have a Numark DJiO that I have never used, would I go, X1>Laptop>DJiO>Pioneer>Amp>Speakers?

Any advice, much appreciated.