Well, I don't know about "really unusual", but...
- You've got an advantage, over a meleer, in that you can carry different types of arrows to overcome different DRs (the meleer needs entirely different weapons). Pack some silver and cold iron arrows. Getting hold of a Quiver of Ehlonna would be a very good thing.
- Weapon enhancements on your bow generally are granted to the arrows. Getting a holy enhancement isn't cheap (costs a +2 bonus), but it's a great enhancement against many monsters. Not sure if the campaign will be undead-focused (you mentioned that your PC will be from Ravenloft), but, if so, bane (undead) would also be great. (A lot, of course, depends on how your DM treats / allows weapon enhancements.)