Once you have reached a conclusion with which you are both relatively comfortable, present in writing your interpretation of the agreement so that if there is any question it will be addressed immediately. Negotiation, by definition, implies that each side will give. Do not perceive it as an ultimatum. You can always reenter negotiations after you have demonstrated your worth to the organization. There are many things you can negotiate besides salary.
Benefits can add thousands of dollars to the compensation package.
Benefits can range from paid personal leave to discounts on the company's products and services. Companies may offer such benefits as child care or elder care or use of the company jet for family emergencies. Other lucrative benefits could include disability and life insurance and a variety of retirement plans. Some organizations offer investment and stock options as well as relocation costs and tuition credits for continued education.