Hello everybody.
I am sorry if my question will seem stupid to many of you but I would like to enter the Serato World and I don't know it well at all. I just know I will enjoy so much because I saw some people use it and it is definitely funny.

I ask some questions about the setup of my mixer Behringer DDM4000 and Serato SL. I would like to understand if SL2 is ok or I need a more complex version (I think I need SL4 but I am not sure). I do not know how Serato and the mixer work together.
I would like to know if it is possible link to my mixer, all together:
> 2 turntables (I have Numark TTX1) + other 2 turntables (or 2 cdc or for example 2 hercules all in one controller)
> 2 microphone (mixer supports them but it has not internal audio device)
> 2 active speaker (mixer supports them but it has not an internal audio device)
> Serato SL2

Can this setup work correctly or should I use a Serato SL4 instead?

Another question. Are the two usb ports of my Macbook sufficient or not? What needs to be connected directly to my Mac? I have no a clear idea of connections required for the entire setup, does someone have it?

Many thanks in advance for your time and best regards,
Stefano