Scarlett 2i2 + DJ controller question

My Scarlett 2i2 is a 2 in 2 out, so if I used that as my audio interface, with a Mixtrack, then the crowd could hear my beatmatching, thus I wouldn't be able to use headphones to cue, from the front of the 2i2, cause the PA, would be running to the back of my audio interface... The Traktor S2 has RCA out the back, and a headphone port on the front, and that works fine, but I don't even have close to enough to get an S2, nor do I feel comfortable throwing $400-$500 on a controller, when my Akai MPK Mini, works (some what) fine... The Mixtrack looks clean and simple for $100... Pitch faders, jog wheels, effects knobs, cross fader, eq knobs, etc... It has everything u need, minus the on board audio....

My real question is, could I get away with using my Scarlett 2i2 with a Mixtrack (if I get one), and have the back of my 2i2, go to the PA, and then my headphones out the front for cueing?

Thanks!