Job interview in one week, thc in system?

My friend refereed me to a job, so im hopefully gonna have a job interview in one week, heres the problem i have thc in my system, ive maybe smoked a total of 5 grams of medical bud, 1 blunt per day for like the past 5 -6 days, if i take acai berry antioxidant and drink a gallon of water for the next 7 days should i be good? i weigh 210 and am 6'1. ( i dont want to here dumb responses such as dont do it, or ur against pot.)