Reply to Buying Advice

I am buying a whole new setup. I had a NS6 sold it and now I am moving to Traktor. I have a F1 and want a Midi Fighter 3d along with an S2. My question is do I get a whole lot more using the S4 or can I just use the Midi Fighter and F1 to control the 2 remix decks. Or the F1 on remix decks and Midi fighter on FX.....Or whatever way I see fit. Basiclly am I missing out or heading the wrong direction buying the S2 vs the S4?