Good combinations of martial arts for MMA? Only 2 styles as well?

Would BJJ and Judo be a good combination for getting into MMA? If not Judo then what should I take with my BJJ cles? I would only like to concentrate on 2 types of Martial Arts. BJJ and something else. BTW Muay Thai is out because I was told I would first have to become proficient in kickboxing for the Muay Thai cles. That place is the only place nearby with Muay Thai. I do not want to spend 4-6 months (the time they told me it would take) getting proficient in kickboxing then do Muay Thai.