Dan and Allen,
It's good to see people in the same boat that my wife and I will be in, in about 6 weeks (or so). We both very much believe that that best way to parent is "by example". Don't want your kid to overeat ... don't overeat (and don't overfeed early on). Want your kids to be physically fit and active. Bingo ... do things (together) to be fit and active. I know some of this is a bit down the road, with respect to an infant, but you also have to establish the habits early.
Anyway, I'll be checking in on your sanity, Dan -- and hoping for the best.