[SOLVED] Have DJM-2000 & RMX-1000 but have a DD-7 pedal i want to attach...HELP!

My lass has kindly bought me for this Xmas what i wanted which was a DD-7 delay petal to add to my setup. I already run my RMX-1000 though the DJM-2000 using the 4 1/4' jack connections. Looking at my mixer, It would appear that I have no more room to add anymore external effects units without unplugging the other. 

My question is this, can it be done so that I can incorporate everything through the mixer? Do I need to invest in some sort of extension unit to have multiple effect unit attached and if so, any good suggestions as in what to get, Pioneer or not.

I have been thinking about selling the DJM-2000 to get a Xone 92 from A&H. Is the RMX-1000 compatibale with the Xone 92? Maybs the wrong tread for this but if there is help out there that know the answer, it would be greatly appreciated if someone could give me an answer before i sell on my stuff. Thanks