Check around this board - there have been at least a few different stethoscope threads. Littman makes several that are < $60. If at all possible, try at least one before you buy it - at the store, ask an instructor, etc. It's a personal thing - no one can hear what you're hearing, so you'll have to judge that for yourself. Don't be like me and FREAK if you can't immediately hear BP sounds the first time you're taught to do it - it can take some practice to tune into what you're hearing, then it becomes second nature.
Websites like allheart.com can let you browse and pick up on some common features.
Scissors - I'd buy a few pairs. Cutting through an "industrial strength" post-op dressing pretty much did in the first pair I had. They're inexpensive enough to get a few to spare.
Shoes - your school will probably specify whether sneakers are acceptable and if they have to be all leather and all white. If you're allowed to wear sneakers, I'd advise avoiding ones that have any mesh as part of the shoe - if you've ever worn them in wet grass then you know that liquids (i.e. body fluids) can seep through.
Happy shopping! It's exciting - at least it was for me. But then, I might just be a geek.
As for the dreaded pantsuit ... I dunno, but I'm getting cafeteria lady visions. :chuckle Hope I'm wrong about that!