Glad I could be of help!
Breastfeeding.... I expressed for 8 weeks then ff. You just have to make sure you have snacks/activitis for dd to do while holding/feeding bub. Plenty of one on one time with dd while baby is sleeping will relieve boredom and maybe some special outings for her and your dh.
As for the hospital.... I had my mum to look after them. Do you have any neighbours/friends you can drop her off to while your in hospital? Where abouts are you? If your close by me.... I would watch her when the time comes!!! Also when I had the baby I made it that dd1 and then both dd1 and dd2 came in first before anyone else to meet their new sister.