First at 34, 2nd at 40. Wouldn't have wanted them earlier, because money, maturity and patience all help a lot. Our own childhoods were, um, challenging, and we're able to make that very different for our two.
Your DH is being unreasonable. 35 is fine. Though if he is just all done with babies, that's not unreasonable - parenthood is hard work, and you both need to be on board I think.