Dc3 is due in 1.5weeks, I have a 3.2yo, and 19.5mo. I have already found that life is much happier when ORGANISED! But still a lot of practice needed! 
People keep saying how hard it's going to be, but I raised the two of them alone for ten months, and I know everyone does have bad days even with just one child surely?
I am looking forward to it, just the transition into the not having a spare hand scenario kind of thing. Dp works mon-fri sometimes Saturday. And does football once a week but end of season soon. He is great though, very good with household things too if not better than me!
I just don't want to waste time being snappy where I haven't planned meals, shopping, making sure I have time for myself too etc. and also dd1 has started preschool every morning as of yesterday so that'll be testing getting three ready and dropped her off at 8:30am when it usually happens that newborn will want breastfeed or poop when stepping out the door lol.
I've pre warned her teacher, but if they give her space to someone else because of her attendance then we have a back up school for September (actually my first choice)
Oh yes, bottles are a no no, breastfeeding all the way. So much easier in my experience!
And I'm working hard at not expecting so much from myself or the kiddos. (I do get stressy when I've had a rubbish nights sleep, but I'm working on it.) they're not small for long. I can't believe my three year old is three already. 