And I don't think it would be a good idea to have a 2nd kid, realistically.
Due to circumstances, my kids are 7 years apart. I wish they could have been closer together. It made it so they were not as close as siblings should be. When my son was 16 and driving and going out with friends, his sister was 9 and couldn't understand why she couldn't tag along with him all the time. Even as adults, they're not particularly close. He's married, kids, house, etc, while she is still just getting her life together.
I think 2-3 years between kids is perfect.