Should we go for a third kid?

We currently have 2 boys, 3 year age gap, and we kind of want to try for the girl, but not sure if 3 kids are manageable. Currently have resps, life insurance and dividend funds in place for our 2 sons, and we bought a house so thinking of that extra cost to do the same for a third, plus I really enjoy travelling. Anyone have any opinions? Do you have 3 kids? Is it a good idea? Do you find it too uneven and feel the need to go for 4? Do all the kids seem loved and happy or are they fighting for time with parents. Is it okay to go out with all the kids? Looking for insight.