Do i have a good chance of becoming a neurosurgeon with b's and c's in the first year of medical school?

Neurosurgeon: Yes. However, it is important to get focused on the rest of the curriculum. The clinical rotations are very important along with the rotations on the neurosurgery service. If you like two clinical specialities equally then choose the field with more leisure time. Remember that neurosurgery is a lifestyle and less a job. It does not lend itself to shift work.

Dedication: It requires excellent academic performance in medical school and superior performance during neurosurgical rotations. So you need to step it up moving forward. It is very competitive. You must be willing to work harder than most. Good luck.