Reply to Audio 2 or Audio 6?

Whats up everyone, Ive been having a little trouble getting all my gear to be set up nice and flush. I have two cdj850s, djm350, and macbook pro. Im using traktor pro 2 software. Now that a .tsi is getting released for the 850s i would like to get my cdjs hooked up and working with tp2.

Im leaning towards purchasing the audio 2 this weekend to solve all of my problems but I was wondering if you believe I should just go ahead an purchase an audio 6. I cant really find out if there are anything I would need the extra ports for.

I am also planning on purchasing the akai mpd mini controller too so thats something to believe about.....any feedback is appreciated, thanks a lot!