Whether you have one monitor or nine, there are ways to work within Photoshop that allow you to personalize your workspace and customize which palettes are open and available at any given time. Flexibility is the key. Take advantage of customizing your workspaces. Remember, customized workspaces can't necessarily make you a better designer, but they can allow you to focus your time and energy on designing and not wasting it on hunting around for a particular palette. Have fun with it.