Hi T.,
It looks like your question is pretty much answered, but I wanted to add a little more info regarding the organic vs. non-organic question.
Certainly, organic milk is more expensive than it's conventional counterpart, but when it comes to your child, it is likely the best bet. The hormones and pesticides that are used in conventional dairy production are carried in the fat - so even if the FDA does not find any significance between the cows who have not been treated with the rGBH hormone and those who have, the diet of the two cows is very different.
Many industrial dairy "farms" - where most of conventional dairy is produced - are in fact large factories where cows spend almost their entire lives inside, attached to milking machines. The cows are given the growth hormone rGBH, which artificially mimics the milk-producing hormone thus swelling the cows udders - it also increases the risk of birth defects in the calves. The cows are artificially impregnated once a year to ensure continuous milk production - can you imagine lactating for seven months out of the year, and being pregnant every year? No wonder many cows suffer from mastitis! The calves in these factories are given a milk-replacement formula that includes, in part, cow's blood (no joke!), which of course is a transmitter of brain-wasting diseases (like mad cow). A cow eating a normal grass diet could not produce milk at the abnormal levels expected on modern dairies, and so today's dairy cows must be given high energy feeds. The unnaturally rich diet causes metabolic disorders including ketosis, which can be fatal, and laminitis, which causes lameness. When pesticides are used in the in the high-energy feed, many are fat soluble, which means that they are concentrated and carried in the fat, and therefore traces remain, and then accumulate in the body of your child (this process is called biological magnification). And where does all the waste go that these crammed together cows produce? Well, right there. The massive amount of urine and fecal matter can only be carted off to a short distance, and then of course these such a huge amount of it that it affects the health of not only the cows, but the residents who are unfortunate enough to live nearby. And of course no cow wants to live in such terrible conditions, and so the life span of a dairy cow in a factory farm is 2-4 years, (instead of a usual 25 years) when its milk production lessens and is thought less valuable and slaughtered for meat - that's like a human only living until she's 8!
Organic milk, on the other hand, actually does come from family-owned farms, which are much smaller in scale. The cows are fed an organic diet, which contains to harmful pesticides, and many are not treated with rGBH. The reason that it costs more is that many of these farms are really owned by individual families, who work hard to provide the consumer with a quality product. Large-scale companies can afford to charge less, since they are producing so much more.
Sorry to go on for so long, but I think that there are many myths surrounding the food that we eat - I'd like to think that the things I consume come from happy family farms - but unfortunately, that's not always the case. It almost sounds unreal, but you can certainly find a lot of information out there about this subject, and check out the facts for yourself.
So good job going organic so far! I hope that you are able to make it work for longer, and even consider it for yourself, since you are a wonderful, valuable mom! The bottom line should never be financial (but I know how it can seem to be at times!), but should focus on what's best for you and your dear little one. Good luck!
Warmly,
~L. d
Evanston