J.B.
Good morning and conrats on twins! My twins were born when my older 2 were just 2 and 4, so I had a lot of thinking to do! I did have 3 in diapers for a while, but we got by with a lot of help and donated diapers from friends and family..:-)
As far as feeding, there are many sites that show you the different ways to breast feed two at once. If you try to alternate them, you will be doing nothing but feeding, so I do not recommend that at all! I did the double football hold and it was fine. When my husband got busier with his job in the fall(babies were 2 months), I was on my own. So I started feeding 1 the bottle and 1 breastfeed, then the next feeding we switch so the one that was breastfed got the bottle next, and vice versa. This was also nice as friends could help me feed. THat worked very well for us, I then switched to all bottles at 4 months as I had too many demands from the older 2 that was making it very hard. THat will be another factor as well, seeing how the older child handles things, my 2 year old started acting like a baby again, ect. to get that attention back, which did not help.
As far as sleeping, the twins were #3 and #4 for us(meaning we had tried it all already and learned what works for us), and they were big and healthy(full term, 7 pounds each!), so they just went straight into their own room, 2 cribs in 1 room, but they slept together for the first couple months until they started moving more. THis is highly recommended by many doctors as that is what they are use to in the womb and it helps them to sleep better.
Hope this all helped! Feel free to email me questions at any time!!! Good luck to you!
J.