What’s easier 2 under 2 , or waiting a couple of years

I have three boys ages: 11, 4.5, and 6 weeks.
It's easier in the sense that the two oldest can be more independent, and I can focus on baby more. However, there are still difficulties

2 under 2 creates this beautiful sibling bond that doesn’t exist among greater age distances. While my older two are excited to have a baby sister, their relationship with her will never compete to the relationship they built growing up and discovering the world together. I’ll have another close in age to this one too, so she’ll get that bond with another human being also.