DP and I have been together almost 16 years. For some years now we've been discussing getting married and having children, but all this time has gone by and we haven't done either of those things yet.
Our main reason for waiting was always money. It's not that we absolutely couldn't afford it - the issue was that we wanted to get on the housing ladder before we started spending a fortune on a wedding, and it took us something like 10 years to save up due to the housing market/economy.
We have now finally bought our first house (yay!) and moved in a few months ago. There's cosmetic stuff we'd like to do to the house but we're not planning anything major like building work for the time being. So in theory we're now ready to crack on with marriage and a family - especially since we're now 34 and 35 so we really want to have a child pretty soon before we start risking too many complications. I already feel like we've left it pretty late, which was purely due to not having a house yet.
I know it sounds like we're good to go now - however, there's a small spanner in the works: my brother. I've always had a good relationship with him even though we don't meet up very often. A few years ago he got together with an amazing girl - who I get on really well with - but she seems to have had a Plan for a long time in terms of what age she wanted to get married, have children etc., and my brother has gone along with that quite happily (he's very easy-going) so basically they got engaged a few months ago, right before we moved into our house, and they are now planning their wedding for next summer. This is despite the fact that they've not got that much money, haven't started saving for a house yet (although I know they want to buy soon, somehow) and are both still in their twenties. Yes I do think they're doing things a bit too early/the wrong way round but then who am I to judge - we've done the opposite!
Given that my brother's wedding isn't until next summer, we're now feeling a bit stuck/in limbo and have put our own plans on hold while we decide what to do.
The way I see it, our options are:
(1) Jump in and get married before them (we're not fussed about having a big fancy expensive wedding so I'm thinking we wouldn't need much time to plan) - we would obviously discuss with them first before making a general announcement... but I still don't see how we can go for this option without being really inconsiderate to my bro and his fiancée and overshadowing the lovely wedding they're planning
(2) Start TTC now and wait to have our wedding until after theirs - thus assuming there's a chance I might be pregnant or even have a very young child at their wedding AND our own (which I know can be done but I would prefer to enjoy at least my own wedding while still child-free, even if I can't drink!)
(3) Wait until their wedding is over before properly starting to plan ours, then TTC after that - I feel this would be the kindest option to all parties (myself included given #2 above) but we'd be adding extra risk of complications with the baby if we wait another 1-2 years from now - isn't it a bit silly to do that simply because my brother's got in there first?
I realise none of this is very romantic but it feels like we've gone past that now as we're both just keen to get a wriggle on with things!! I also realise I may well be over-thinking all of this! Just wanted some opinions from those who don't know me or my family 
We haven't spoken to anyone we know about our concerns as we just don't want to step on any toes, or start a massive discussion when we don't yet know what we'll end up deciding anyway...!
Sorry for the long post. I'd appreciate any input... even if it's just to tell me to chill! 