drinking competition

We will have a drinking competition in january, but it’s not the amount of alcohol you drink, you have to do a breathalyzer test and the highest BAC wins. How do i drink the most possible alcohol that day? Technically i could start drinking hours before the test, but i wonder how much alcohol would actually stay in my blood, how quickly does it get out of the bloodstream? So basically i’m trying to find the best time-alcohol ratio

Also i was thinking maybe drinking a shot immediately before the breathalyzer would make it higher? Idk how it works..

(i’m gonna drink vodka btw)