we don't really teach people how to get high, but i rather suggest than you take it upon yourself, id go for the 20 vicodin and 5 oxy if youre opiate naive, but if you know you can handle the dose for sure, you can go for the vics and oxy together, but if you're naive you might feel sick, but you most likely want to take less oxy than vicodin as to the valium 5-10mg should get you that much closer to a nod but, you're chasing somthing that is somewhat not particularly the best to be chasing as someone opiate naive and playing with fire, that being said
i usually suggest that oxy is the least likely to give someone a nod, it may infact be a nodbreaker if you were gonna get one (i usually take oxy with everything else but in a lower amount than what i'm combining it with unless its the main chemical because it has less of a downer effect than most opiates but gives a euphoria unlike most opiates too)
you actually might want to start slow with the opiates first off, and if you're not out in 30minutes take some valium just to play it safe, also if you're not gonna take the valium it might be safer just to eat all the opiates... alass.. try to play it safe you can always take more but never less.