Wow! Congrats on your new baby boy! That is awesome!!! I wondered where you'd been! :-)
I breastfed, too, so I know the worry of dieting and messing up your supply. Just remember, you probably will burn around 500 calories a day by breastfeeding alone, so you can still eat a normal amount of food and the weight will still come off.
If you ever need any breastfeeding advice, feel free to ask. I was a nervous wreck as it was my first time (bottle fed my daughter), but I asked my sister-in-law a ton of questions. I managed to do it for 13 months, but I didn't work. She breastfed all of hers (she has 3 boys) and she is a teacher, too, so she managed to do it for at least a year with each one while working. Hopefully you can, too.
I love the family pic, too. You, your husband, and your sweet baby look like such a happy family. I wish you all the best, girlie!