Instead of using Photoshop, why not give Apple's Aperture a try? Aperture is designed more for post-production work for professional photographers, letting you cull through shoots, enhance images, manage massive libraries, and deliver stunning photos.
Watch this video tutorial on how to work with RAW images in Aperture. Aperture is designed from the ground up to handle native RAW image files you shoot with your digital camera. From the moment you import your RAW photos, Aperture gives you access to all of your image data and makes full use of Mac OS X's core image. Learn how to batch process your images with the lift and stamp tool.