Severance offer, what should I ask for? - what worked for you?

I was offered 8 weeks of severance after 8 years as a school bus driver, and I have a few days to sign. Thank you in advance. There is a non-disparagement clause. Should I see a lawyer?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.