Reply to Potential future setup ... will it work?

Right

I currently use a battered old Lenovo, with an AK1, TP and a VCI100SE

I'd like to learn how to add proper scratch transitions to this, so I'm intending to upgrade to 2x1210, TSP w. A8. I'd like to incorporate the VCI to run the FX and cue points as well as decks C&D, so a can bang some samples around

Is this possible?

How many channels would I need on the mixer to run this, I've got a ropey old Kam one that was chucked in when I bought the decks, but the faders are horrible