Too many unknown variables with this mix. For instance do you happen to be on those medications, if so for how long, what type of oxycocet are you using, how many ambiens. It's unknown how the mentioned drugs interact with each other. And the mentioned amount doesn't seem to be promising either. Its probably better to avoid benzo based OD concepts unless you really have a sound understanding in the field. Opiod's are a different concept, sure they work but its not as simple as that, depends on which one, the amount, purity(incase it comes from street), tolerance, time, speed, bioavailability and this is just to get started. I'm not trying to scare you or anything but these are things to consider. NSAID, not really a fan of those, not for said purpose they take way too long. Also mostly for drug related OD's its suggested to use anti-emetics. Even when mixed with alchohol, which helps potentiate, the mentioned mix its highly likely to not work.