Don't fear negotiating elements of your next job offer. Instead, decide what is most important to you and then go for it!
But wait, before you start, you need to do some research.
- Identify what elements of the offer are most important to you
- Know what the "going rate" is for the kind of work you do
- See if the company has set negotiation presedents
Here is some reading that may help make this process a bit easier:
The best time to gather this information is now, before you actually need it!