The eligibility criteria for a SC category student to be eligible for NEET is 40%. Now as per the marks you have provided, you are scoring around 81.66% so you are eligible for the NEET. There are no where its mentioned that the GRACE marks candidates will not be considered. So you can obviously opt for NEET.

To know more about NEET visit the link below:

https://medicine.careers360.com/articles/neet-eligibility-criteria

I hope this answer helps. All the very best for your future endeavors!