Baby Budget Questions

Hey guys! I have 4 important budget questions. We haven't conceived yet but we're trying and I'm budgeting. I've estimated my opinion of what we'll need but we're first time parents so your opinion will be of great help. 
1) Is $1500 a reasonable number for a baby nursery/necessities? I'd like to buy the bigger ticket items such as the crib, rocker & changing table/dresser. (Am I missing any other big ticket items?)
2) How much did you budget for shortage of income during maternity leave?
3) How much were your hospital bills after insurance? 
4) Were there any other expenses that came up that you didn't expect?
Thank you all for your help. I'm a planner as you can see and get uncomfortable when I'm not prepared. Thank you much!