Could potentially have age gaps of 19mths (dc1&2) then 5 yrs, then 15mths. Don't know how it would be.
While it would be nice for dc3 to have a sibling who is close in age, I am worried about the lack of attention to the older two. As it is, they are left to just 'get on with it' a fair bit (they are 7.5 & 6). They seem okay with it, and they really adore their smallest sister. Also I think it might be very tough to go back to having a toddler and a baby (getting around with all 4 on my own and no car, also physical toll on the body, etc.)
How has it been for you? Have you ever regretted having dc4?