Good afternoon. I will take the TOEIC test next week, but I haven't had enough time to prepare. So I will try it to test my English ability.

Good afternoon. I will have TOEIC test next week. But I don't have enough time to prepare. So I will try it to test my English ability. Each sentence is grammatically correct but I'm not sure with the "thoughts" in the last sentence I will have TOEIC test next week. But I don't have enough time to prepare. So I need to study longer each day. OR So I might fail. "So" is like だから。