Reply to Adding CDJs to the S4

Hey guys so there probably is already another thread to this but i wanted to make it easy for myself.

Currently im using just an S4 and a launchpad with 4 deck midi fighter mapping.

I really hate having to switch from A to C and B to D decks and have decided to incorporate some CDJs into my setup.

Now I am not a scratcher so i dont really need to worry about that end of it.

What i want to know is what is the easiest way to incorporate some CDJs.

Would adding some DNS3700s in midi mode be easier than getting Scratch upgrade and using CDJ1000s with timecode?

To my understanding if i get the scratch upgrade...i plug in 2 cdjs into the RCA input on my decks, and off i go....is this correct?

With the DNS3700s i would have the option to do above OR plug it in directly to my laptop and use it in midi mode.

Any feedback is greatly appreciated