First I would buy a test kit that can tell if the cocaine is cut too much. If it's not, buy an 8 ball in Vegas and spend a week or two gambling, swimming, eating, fucking and taking in some Vegas shows.
I remember when I did coke at first it wasn't cut much and over time the dealer kept cutting it more and more until you purchased some, went home and did it and got nothing off of it other than a plugged up nose.