There are salary calculators on the internet that can give you a general idea of what what people in your industry earn. These can be quite useful but I would also look at job vacancies for senior sales people and see what people are offering and go for the higher end of the scale. Calculate the cost of your child's daycare and make sure that you get the best money you can. When negotiating be gracious and firm. Decide privately what the lowest amount is you would accept and don't feel pressured to go beneath that. You are obviously valued by these people so value yourself. Good luck, I am very excited for you.x