Well I'm sure you already did the mix by now, but first and foremost I wouldn't mix the oxy with uppers. One obviously slows you down and the other speeds you up, which isn't the best for your body just for harm reduction purposes. I also wouldn't drink with oxy either.
As for the coke and adderall, I've personally had this mix before and I've been fine at much higher doses. Although I still wouldn't suggest it because it raises my heart rate exponentially.
How did it go for you?