Our little one is 9 months and we are thinking of having another one soon. We are thinking about trying in April, when Christian turns 1. This way I have 9 months at work, enough time to replenish the savings account b.c the max EI payments are a joke.
When talking to a lot of women at work, some with 2 and some with 3 kids, they all said it was a good idea to have the kids close together. This way they will play with each other, you will finish with diapers all at once, and when you have to take them to soccer/hockey/swimming/whatever they are all around the same age and you can do it at one shot.