I have 23 mths between my two boys, and that's great, and then 13 mths between boy number 2 and my daughter , and they are like twins really. As boy and girl, and very different the don't get on if the older one is around, as they would both choose him over each other, but when he is away at Nanas or on scout camp etc, they get on really soo well .
I would recomend the small aged gap, as although hard work, most of the things you do, todlers etc are for the same age group or stage so it makes it easier. I have now one in scouts and two in cubs , so less pickup and drop offs!
this one will be 8 years and 10 mths after my youngest! ho hummmm how did that happen
Go for it Lisa!