Severance offer, what should I ask for? after 5 years as a web developer

My manager said the package is final, but the letter gives me time to review. I do not usually post, so bear with me. There is a non-disparagement clause. What did you ask for?

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

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