
You've found a great place to get support and advice. I'm in a similar situation as a stay-home mom, even though my kids are older. Here's my plan, but remember that not everything will work for everyone.
Calorie counting/cycling- averaging about 1600 cal per day. I stick to whole grains, lots of fruits and veggies, organic granola bars, 100cal packs of popcorn for snacks. The calorie counting has worked best for me so that I can feed the rest of the family what we have always liked, but now I make the recipes healthier. I use olive oil instead of tons of other oils to 'fry' things. I steer clear of anything with high-fructose corn syrup, artificial sweeteners, bad fats, and very much sugar or salt. I eat 6 times each day, as well, so I don't let myself get too hungry and end up bingeing!
As far as exercise, I've started walking with the boys and we moved the weight bench to the living room (probably not the best idea with little ones though

). We also just got a stability ball and everyone is enjoying practicing with it! I have to stay by the couch, though, or I fall over
Hope some of this helps! The best thing I can say is to visit here often. There are so many smart, helpful people to talk to and learn from. I know I wouldn't be succeeding now if I hadn't found 3FC and joined.

and best wishes!