First off CONGRATS! I think if your ultimate goal is to be a Certified Nurse Midwife just go with L & D. You will be one step closer to achieving your goal. You will still enounter the same type of problems as a med-surg floor like diabetes, HTN...etc but your focus will be in L & D. Good Luck
First off Congrats you got in. Drug cards aren't as hard as you think. You will need a Drug Book such as Davis's Drug Guide for Nurses which I like very much. That pretty much as all the information you need. You can format the card anyway you like that makes it easiest for you to learn the information. I hope this helps.
West Hills Community College in Lemoore offers a completely online Physiology class the labs are virtual. Even if you attend the in-classroom setting they do their labs virtually. You can submit your application for admission and register for your online class all in the same day. They have full semester courses as well as short term. www.westhillscollege.com