If your looking to become a complete MMA fighter, you'll need ot learn as much as you can. Being that the first school is strctly BJJ and the other is an MMA school with Jiu Jitsu and Muay Thai i'd go with that.
This is the life of a fighter. Sometimes you have to be willing to make sacrifices and hard choices.
Money is also a major issue. My parents stopped paying for my classes after my Junior year of high school. I have to fork out at least $140 per month to keep training. It's very frustrating.