Hi, Katie H. from another Katie H.!
As an undergrad., I double majored in Spanish and International Studies. There is no disadvantage in the long run for you keeping your Ed major. I ended up teaching a lot and going back to school for a MA in ESL from a teacher's college but would still love to have certification. If anything, it's another job possibility for you later, even if you go all the way for a PhD. You'll end up in the classroom at some point, so if you could manage to do both majors now, you'd be in a good position for grad schools or jobs. You could always add a language through study abroad, which is also what I did when I'd finished all my Spanish major requirements--I went to Brazil and studied Portugese my senior year.
Best of luck!