If you have the test in 8 days like you said i would suggest a High Fiber diet, in addation to a high intensity cardio work out. 3 days before the test STOP working out and go into hibernation meaning be lazy and eat salty foods high in fat. This will cover up fat cells containing THC. Also the day of the test follow N2 sticky on dilution. Get some Home drug tests to see if your passing or not and also you'll be able to practice the dilution with those tests.

Since it is pre-employment test i would suggest looking at the substution sticky because they probably wont watch you and it has a higher chance of being successful. Even though i only abstain 6 days before my test and pass with the dilution method.

I'm 6'0 185 lbs

What is your height, weight and smoking history?