First ask yourselves why you hired a DJ in the first place. Was it because it would save you money? Did you go to an event where he played and you liked the way he got the crowd on the floor? Was it because you thought a wedding band may not play the songs you want? Is it this particular DJ that you’re having second thought about or just the idea of a DJ in general.
Before you cancel the contract, lose your deposit and start the music search over again you need to figure out what your alternative options are -- is there a band you like that’s free on your wedding day? Will you have enough time to find someone new? And secondly, what entertainment do you really want for your wedding?
It’s fine to change your mind but just make sure you’re making the decision for the right reasons and before canceling the contract you need to know that the alternative you’re looking for is available.