Tired of waiting.

DH & I have been together 7yrs, married 5. 3months after we got married, my Mom passed away and shortly after that, baby fever started. I have a now 8yr old daughter & DH has an 8yr old son, both from previous relationships. I never really pressured or anything to have one together til here recently, but 2 years ago, he told me he want3d to have a baby. I was over the moon with excitement! We tried for about 2 months, not charting or anything, then he decided we needed to wait a little longer. Well here we are, 2 years later, and he still isn't ready. He swears to me we will have a baby just not yet. He wants to not only be better off financial but also his sons mother moved him to Colorado & we live in Florida so he doesn't have a good relationship with his son and wants to better that. Which I am completely in agreement with and I understand the hesitation there. He is worried his son will feel replaced or unwanted. So there's that. But as far as finances, we bring home about $8000/mth so I'm not understanding how we could get much more stable. Bills are paid, we have luxuries and a HUGE house with a spare room and plenty of space for another child. I've even started a baby find and have saved quite a bit of money in a short time just to show him we can do it. I'm done waiting. I feel he's just gonna keep putting it off until I have no more eggs to fertilize!!! I love him and he is my soulmate but I'm not willing to not have another child. I have been patient but geez, for how long do I have to be?!?! We are in a great place in life to have a baby. He is 34 and I'll be 30 in less than 5 months. Please give me advice!!! Even if it's not what I want to hear. At this point, I'm leaving when I hit 30.