Reply to Numark Ns7 vs. Timecode serato scratch live.

I have had my ns7 for about a year now and its still in very good condition. I am concidering selling it to get two turntables a rane mixer, novation dicers and an apc20 or launchpad to use with the bridge. The main reasons why i want to sell my ns7 is because i dont like the small platters and the fact that i cant make my own mappings for things.
What do you guys sugest. I mainly mix electro but i also love to scratch. Is there really much of a difference between the 7in platters on the ns7 and regular 12in turntables? Would it be smarter to stick with my ns7 and save all that money because i realise that other than the small platters, the ns7 pretty much does everything a dvs setup can do.
The other option might be to get a Trakor s4 with timecode, but the crossfader cant be replaced!