Hmmm, the only thing I would perhaps consider is wether you really need 24 liners (12 Sandy's and 12 One-Size). The newborn won't need inserts for a while (not till he/she stops pooping at night and then you can start boosting the nighttime diaper a little to go longer periods between changing). It's unlikely that the 19 month old will need an insert in each diaper either. This occasionally happens with heavy wetting toddlers using the One-Size but almost never with the Sandy's (it's a little more absorbant).

So the only time you're likely to need liners is for nighttime for the toddler and then later on for the baby. Maybe occasionally for the toddler if he/she is a very heavy wetter. So 12 liners would be ample for that, especially if you wash every day or two. You could chose which liner you prefer, it's not critical to use snap-in liners in the One-Size just laying in a Sandy's liner will work fine. And there's no reason you couldn't just lay a snap-in liner in the Sandy's...

Also, I don't know exactly how big the Thirsties covers are but I would consider that there's a very good chance they won't fit over the One-Size diaper. Folding the front flap down gives it more bulk than other diapers so a tiny newborn cover isn't likely to fit... If I recall correctly the nb Bummis covers wouldn't have fit either... If you need something for the prefolds and are planning on fastening them anyway (snappis or pins) then the Airflow will work fine and a size small will last  longer than a nb. And unless you're getting an amazing deal on the Bummis or Thirsties, I'd just stick with Airflows or Rikkys. I've used the Bummis a few times over the years and although they're a good, durable cover (and admitedly cuter than the ME ones) they just don't match the bullterproofness of an Airflow!

Karen.

Oh, one thing I would consider adding is some stay-dry liners of some type. I would highly recomend just getting some plain old cheap fleece and cutting it to size. Cheap and super easy! No sewing necessary as it doesn't unravel. You lay the fleece on top of the diaper and it will let moisture through to the diaper while drying almost instantly (fleece doesn't absorb so dries extremely quickly). Great for nighttime, sensitive skin, protecting diapers against poop stains (fleece hardly stains at all) and even makes poop diaper cleanup easier because poop doesn't tend to stick to fleece as much as terry cloth.

Obviously you don't need to special order that but I'm nut sure how available that would be in Mexico so perhaps your family can bring you a yard or so... Or you could purchase some, ME makes some as well.

Karen.

If she uses them for stay-dry liners then they'll surely work. It's the fact that fleece is made from polyester that makes them work this way so I don't see why it wouldn't work.

Pretty sure the Sandy's liners will fit inside the One-Size, if I remember correctly they're pretty much the same size anyway. You could check with ME to be sure though. Although at worst you could always just get the snap-in One-Size liners and use them in the Sandy's as well. Or fold a liner that's too big (they'll both be too long for the One-Size with the flap folded down anyway). 6 of each would work too, although you're probably just complicating your stash without really gaining anything. If it helps the decision process, the snap-in liners are ever so slightly more expensive.

Hmmm, good point about the covers. It's hard to say, I can't remember when the smalls stopped fitting my girls. But I was using the x-small and then small Sandy's so it would be different with the One-Size anyway. I will say though that many people find they can easily skip at least one size. Either they skip the mediums and go straight to the M/L or they start with the mediums and then skip the M/L. There's not a ton of difference between the two and there's always a fair amount of overlap between sizes.

Either way though, you could easily do just 4 small covers and then a couple bigger ones. Typically you only need one or two covers per day at most so 4 should be plenty. I found that I preferred to buy fewer of the really small covers and then more of the larger covers. They're in the small ones for such a short period that it didn't seem worth it to buy too many. Besides, when they're little their pee is so inoffensive that it's super easy to just quickly wash/rinse one out in the sink if you're running low.

Karen.