Reply to buying 2x CDJ-2000 Nexus + DJM-900 Nexus.. is this all i need to buy?

I'm looking to buy 2x CDJ-2000Nexus + DJM-900Nexus.. Do I need any other special cables to sync them together or run them to the mixer? I already have those standard black cables that I have hooked up from my Traktor Kontrol S2 to my Yamaha monitor's (male to male connector, not sure the name of them)..

Do I need to make sure I pick up anything else to make sure this setup is fully functional or does it come with everything to link the 2 together and to the mixer? Thanks for your help!