Should I negotiate my severance? - 7 months and counting

The company sent a severance agreement with a release of claims, and I am unsure what to do. There are 15 people counting on me, so I am trying to be careful. There is a non-disparagement clause. What did you ask for?

An hour with an employment lawyer cost me a small fee and made me feel much safer about signing.

I asked for two more weeks and a neutral reference. They agreed to the reference and added a week.