I am now 28 and want to have a second before I am 30. I don't think you are selfish wanting to have more bubbas. my sisters were only 2 years older than me. It has meant that my son and my youngest niece are similar ages which is fantastic. I am sure you will make the best decision for your family but just wanted to share what one of my work colleagues said to me a couple of years ago.
If you put off having kids because you want to be more financially stable you will never have kids. There is a lot of grey area there, but I think there is some truth to it.

