well the first thing ya gotta do is extract the codeine for a cleaner high. you can get information bout that at
http://www.neonjoint.com/drug_recipes/chapter11.html
i cant remember how many mg's of codeine you said were in each one but take about 3 or 4 times as much codeine thats in each of those pills, n to be safe bout the extracting thing jus use 4 or 5 for the extraction n take all of it, that way u dont gotta worry about ODin on codeine. but be careful wit that shit man, like all narcotics there is addiction properties.
peace