We have all 3 of our girls sharing. When dd2 came along, she was in our room in a basinette until 4 months. During that time I got dd1 into a toddler bed. They are 19 months apart. When dd3 came along DD2 was already into a todler bed becuase she could climb out of the cot by 18 months They are 23 months apart. So dd3 moved into their bedroom at 10 weeks and we invested in bunk beds. Works really well. If we go back for #4 then we will just do the same, baby in our room, next up into a toddler bed. Then when it comes time to popping it into the other room..... well thats another thing to think about (ooh I am seriously thinking about number 4!)

It will be fine... I have 7 siblings and we shared most of the time and there wasnt too many issues.

And I have a phil and teds double pram.... doesnt take up much room and 2 go in it.... or in our case we can fit 3!