My boyfriend wants to have 6 babies

And I’m not ready. I’m 28 years old. He’s 29. He has been talking about wanting kids since the day we’ve started dating in 2020. I feel like I have yet to enjoy my youth and we have barely enjoyed our time together as a couple despite dating on and off for four years. What’s crazy is that this man wants to have this many children and is barely employed and doesn’t really believe in marriage first ?? His mom had him before marriage and currently is in a domestic relationship with another man with two additional children. They may live together but the home isn’t owned jointly. She just happens to live with him. I’m just worried he will do what his mother did. I’m more of the traditional type, I want to settle down, get married, have a house together, then have one kid at a time. I told him, he needs to make at least $500k a year per child or it’s not happening. The reason why is because we live in NYC and I don’t believe it’s feasible considering my lifestyle and how I want to raise my children. I grew up going to private school in a second generation immigrant family. I want to provide an even better life for my children. I’m getting scared because he’s been talking about having babies more and more frequently and I’m getting more and more paranoid. We don’t even live under the same roof yet and he’s having these unrealistic expectations of trying to bring a child into this world. I don’t want to lose him. I just don’t know how to tell him I’m not ready. I love him too much and I’ve already told him countless times I need a ring and a house before kids. Period. I sincerely hope he’s not going to propose with anything less than a 2.5 ct ring though. Yes, I know I have high standards and the reason being that I won’t say yes unless the price is right. If he wants all that I need to know he can afford that wifey and family lifestyle and salary. For context, he does expect me to continue to work a full time job through all this??? So there’s all the more reason why I need to demand more. I am not looking to be a stay at home mom but having 6 kids and a full time job means enough money to have a full time nanny/nannies to be there when neither of us can be.

FYI, I am venting as I am about to have yet another grueling day at work.