Any other training tips anyone could help me with?

Yes that is a great way to train him to be comfortable around children. If you want to teach your dogs to stop barking then you need to teach them the "stop" command. What you do is say the word stop and then give them a treat. Repeat this several times. The next step is to say the word stop while they're barking, if they stop barking say "good boy" or "good girl" and give them a treat. Another way to get them to stop barking is to get a whistle. Do the same thing with the whistle as you did with the stop command. Blow the whistle and then give them a treat. Repeat this several times. Then the next step is to blow the whistle while they're barking, if they stop say "good boy" or "good girl" and give them a treat. Hope this helps. Good Luck!