L.Y.
Hi there,
wow... hands full mama. To make it easier, I thought you'd better to buy a stroller for triples. You can check this out. http://www.parents.com. The only problem is the color may difficult to fit for both your boy and girls.
If you would love to buy a twin stroller and a bodie carrier, I would suggest you to check this out bumbleride Indie twin strollers. Couple of my friends purchased that one, attract lots of eye balls when we strolling together. We purchased it from http://www.marketamerica.com/healthexpo. Click "Shop Partners" tab, then choose alphabet "L". Land of Nod carried bumbleride Indietwin stroller which are "Must have" one. They paid you 4% cash back which is around $30. Is that COOL? By the way, the registration on that site is FREE.
That is my two cents.
Good luck,
L. from SD