My plans for Pre-Empl. Urine test...

I'm going to have a few interviews coming up for some well paying jobs and as much as I love the herb, I've gotta clean out for a little while. I've been pretty much a daily toker for about a year with a week hiatus' within the past year, but not recently. I'm 20 years old, 6'2 about 220lbs and not crazy active, but I get a fair share of excercise. I'm not in terrible shape, but by no means do I go out and run a mile or two daily. So here are some things I'm going to be doing prior to my interviews:

-Abstain from smoking for the time being.
-Increase fluid intake, at least 2L/Day (gatorade, water, cranberry juice)
-Increase excercise (start running daily)

What else can I do to flush myself out? Doing the above, about how long do you think it should take before I'm clean? Anybody recommend more ways to clean?

I plan on taking a at home test prior to the pre-employment test. I'd much rather be clean and know i'll pass than rely on a substitute. Thank you all in advance.