Honestly you need to decide what's the priority for you. If you have the wedding & the family but can't afford your own place until mid-30s is that okay? (Bear in mind easier to move up the ladder in general than get on it, so first place may be small?)
On the other hand if you have a big mortgage, you may find yourself stretched with young children.
Posters can only speak from their own experience & what they've seen, so here's mine. DP & I were sure on house, keen but in not rush for marriage & uncertain about children, so sounds like the opposite order to your OP 
We bought a family home & had a nightmare with it (long and boring story). I'm now in my early 30s and we are keen to get married, but because we've been together so long it does end up down the priority list (particularly as DP would like to buy me a nice ring & I keep seeing jobs that need prioritising first
e.g. 'that ring would replace the downstairs bathroom ffs!)
Anyway, I too want to get married before children. I'm also still pretty ambivalent about children, but I guess if it ever becomes an 'urgent' matter we can always nip down the registry office 
I've had to 'own' this choice many times, when we discovered problems with the house, when DP was made redundant, when the wedding budget really was spent on urgent repairs.
We're comfortable now and are talking about getting engaged next year (once DP fully established in new job) and planning a wedding the year after. I'll be 33, so not quite the blushing young bride I envisaged
(not that it really matters, but I did always think I'd be married before 30 given when I met DP).
It sounds like you really want children. So in your shoes I'd probably be thinking small wedding, try for kids and try to save a bit for a house deposit in the meantime.