S.,
In truth, DH and I didn't want kids at all. Then, I realized I did. It was a long road to get my DH on the same page, but I did. I didn't nag, threaten, argue or push the issue. I DID show him how we could do it. I DID tell him how much I wanted to pass on our love and life together in a child. Then, when my son was a year, I threw my husband another curve ball...I wanted another. I think he had a slight heart attack.
At the same time, I may have a different opinion than the other posters. I see that you are a working Mom (as I am), so that means daycare of some sort would be a concern. And, for us, that's not cheap. One was expensive and adding another was just about double. Ouch!
I totally agree that money shouldn't come first. But, I was raised by my Mom without child support and she struggled all the time to make ends meet. We moved from apartment to apartment, even out of state twice. I swore I wouldn't do that to my kids.
I waited until we were financially secure before I even thought about a baby. For me, the thought process wasn't so I could "buy my kids stuff" but so that we could offer them what I never had - security.
It's a scary economic world right now and I'm sure that your husbands fears are real. I think men worry about the practical part of life choices more than focusing on the emotional. When I wanted baby #2, I had already gotten all of the information together for him. Daycare costs, what I could do without, how we could do it. My second son is now 19 months. ;)
I think you need to address your DH's concerns specifically. Work out the numbers for him and show him what YOU are willing to give up to attain your life goal. And what you are willing to do for him to meet his (a house). For right now, I wouldn't focus too much on what HE needs to give up (lunch out, golf, etc) as that could be part of the reason he doesn't want another child.
Sorry if I jumped around here and I hope this makes sense. I'm at work and multi-tasking.
Good luck to you.