Congratulation on both the baby and the promo.  I am sure everything will be fine.  As far as leaving development I know the feeling.  I used to missed being development work.  I used to be the only development DBA working with 7 developers working for a start up .com company (24X7), now I am a production DBA and I take care of 20 or more DBAs and a lot more developers.  I don't spend time worrying about the data architecture as much as development DBA because my primary jobs switch to taking care of hot fixes, service packs, and managing backups jobs, DBCC Jobs and other job that I wrote to pull data from our many different server and push report to what we wanted to see and manage. 

I do work a little on development when development DBA ask me to help them solve something they couldn't solve, or support developers when they needed direction on how to approach and start their new application.

I have time to take care of my children when I needed.  I have 2 children (todlers) and they are just as demanding as babies. 

Good luck.

mom