Drug test on Monday. Smoked my last bowl 2 days ago. Already a faint line hometest.

[Burnt Toast]

So in your opinion, do you think the best way to go is for me to use my first void the day of the test, and if I fail that one then go ahead and use my Quickfix?

Yep, subbing (with synthetic or clean human urine) is the way to go if youre failing home tests with the first void of the day.