Thank you everyone for all your advice.
I have been trying to show him how I plan on saving money in the long term- such as using cloth nappies and wipes, the baby furnature and clothes are all coming from family and friends (which they have already started giving to us), and buying second hand items where possible. I know so many short cuts to setting up for a baby, being in the career path I am in (childcare 9yrs). But as always that Accountant's hat is on!
I feel like I am at pulling at strings with him.... but he is fully convinced about trying for a baby when he's a bit tipsy! LOL!