the vests are good, but because they're a bit big they'll be out of them as soon as they start to move around a bit. we use dog jackets or sweaters, we can get them at walmart for about $10, they stay on really well and can be washed when they get mucky. not to mention there's not much cuter than a baby goat in a pink dog jacket with fur collar or a camo jacket with a skull embroidered on it if they're out and it's sunny, you can take them off but we keep them jacketed overnights until they're established and active, longer if the weather is wet windy and cold.
we worm the mothers the same day they kid, or the next, becuase if they have any worms at all they'll get a bloom of them right after they kid... its the progesterone I think that wakes the worms up.
make sure the kids are getting enough milk, and that both sides of the udder are producing and unblocked, and that they're working both sides.
add some grain to mama's ration if you haven't already, since she's a bit thin she'll need the extra calories. if you can put her on half or more alfalfa hay that will help with milk production too, it's high in calcium and protien.
other than that, with healthy kids, there's not much to do but enjoy!