You have 2 months, just quit until after the test. You "should" pass with no problem. Unless it's one of those damned hair tests but most companies don't want to deal with the expense. At the minimum, if you're smoking daily, 30 days will usually do the trick. If you can't quit for a couple months, maybe you should reconsider your usage. 1/8 a week eh? I kill a 1/4 a week without trying. The last time I had to do the pee in the cup thing I was clean for about 5 weeks and no problem.
And no cheating....!!