If you are in Ontario then that would be 6 kids and you are only allowed 5. Not sure about other province rules. When you think about it you cared for your 4 when they were little and you were inexperienced to a certain extent. Now you are replacing those 4 plus adding 1-2 more based on your experience so it is totally doable but just make sure you know the age and number of kids limits for your province.