in need of your opinions

Hi im Sallyann I'm 27. I have 2 daughter's Lilly aged 4 and Lottie aged 1. I know I would like another baby and my partner. He would like a boy but equally a girl again would be just as exciting. I'm toying with the idea of life's to short why not try now. But if I'm honest I struggle with sleepless nights. And now my one year old entertains herself , walks around, feeds herself it makes me also think to wait a bit longer I'd like to ask other women if its best to have another one now and what the hell or wait until my youngest is older and a bit more independent?? thankyou