2 weeks.. can i do it?

[Burnt Toast]

on the day of the test, i will take 4 aspirin, 3-5 hours before the test consume 2 20oz of water and take a vitamin pill with each.

My questions are, do you think i will pass, is there anything i need to change in my regime

Skip the aspirin. It was effective against only one type of test: the first-generation EMIT screen. Since then, a second-gen EMIT was introduced to counter the interference issues caused by aspirin. As a result, the first-gen EMIT is seldom used anymore (if, at all).

and what is the possibility of me coming back as diluted?

Theres always that possibility. When doing dilution techniques, you should have some validity test strips at hand so you can monitor your creatinine and SG levels (the two urine constituents tested in determining overdilution).
Do a Google search for drug adulteration test kits.