I have a 14 yo, 3 yo and 1 yo, and life seems to be getting a bit less stressful!
I just can't decide whether to try for one last one! 
We have room, could afford it etc, but it would mean me most probably having to give my career up, and as I do the bulk of the childcare, it's obviously more work for me!
Has anyone in similar circumstances made the jump? Or regretted not?