first, never heard of purple diesel? lol... i know there are thousands, but to me that sounds like a marketing name made up by the dealer...

second, given your smoking history and the earliest possible piss test, and how much you have to smoke... go for it... if you're going to be tested positive, those couple of bowls aren't really going to make much of a diffrence anyways... tommorow (assuming you smoke it all tonight) just drinks lots and lots of water... for the first week or so...