That's awesome that you're looking after yourself while parenting two babies.
How much exercise have you been doing since the birth? If none/not much, then I'd suggest just starting with brisk walks (with or without babies) and then add the other stuff once you've got in the habit of setting aside time to work out. When I was getting back into exercise at the beginning of this year, I used to tell myself just to drive to the parking lot where the workout class was held. That was easy to contemplate, even on my least motivated days. Then once I was sitting in the parking lot, I always figured I might as well just go in and workout. (Then, once it became fun, I didn't have to manipulate myself that way!!
Zone diet on and off for several years....worked, but too much focus on exact meal composition
Primal since July 2010...skinniest I've ever been and the least stressed about food