It sounds like you've lumped the 6.8% in with the 5%. Can you pay the 6.8% off first before moving on to the 5%? I realize that it's only 11 months, so the difference is pretty small, but if it would take an hour and save $50, it might be worth looking into.
I ask because at one point, all of my loans were rolled into one pile, and it took a few years before I realized I could pay off the 6.8% loans without also paying extra to the <3% loans.