lol, it can do wonders for the sex life if you don't take it all too seriously :-)
It sounds like it could all fit in together really well, if you do bring it up again then you can point out that you're unlikely to fall pregnant immediately, and even if you do, you still have months to make all those changes to the house.
I felt exactly the same as you, hubbie brought it up (more than once) and I was initially very resistant (have been for years) but once I 'got my head around it' as you put it, I just didn't see the point in waiting when it might take 18 months to fall pregnant anyway. I also had a list of things I wanted to do first, but the list kept getting longer, rather than shorter, and we both came to realise that there would never be a 'good' time, and if there were, there was no guarantee that it'd happen for us. I can completely appreciate how you feel.