Johnny Borizov, 30, will stand trial in January 2013.
He is accused of hiring his friend, 25-year-old Jacob Nodarse, to kill Jeffrey and Lori Kramer and their 20-year-old son, Michael, the family of his ex-girlfriend.
The ex-girlfriend survived by hiding out in a closet.
Nodarse has pleaded guilty but mentally ill.
Borizov says he is innocent.