When selecting a specific tool in the tool panel, why don't you press the shortcut key continuously so that the detailed options of the selected specific tool can be selected in turns?
To cycle through the tools that share the same keyboard shortcut, hold down the Shift key and tap that key.
If you prefer to cycle without having to hold down the Shift key, you can change a preference. The Preferences can be found in the Photoshop menu on a Mac and the Edit menu on Windows. Within the Tools section, turn off the option "Use Shift Key for Tool Switch".