Hey bdurham,
Ace has shown that you can go to town setting the Finder view with KM. You can set the menu-state. You can also detect the menu state, so you're macro can make choices based in the current set-up if desired.
Smart folders need not show up in your Finder window side-bar. They can be hidden in the "Saved Searches" folder, so you can have as many as you want without cluttering the Finder.
In this use-case I'd rather use AppleScript than a KM-specific action, because I have more control over what the Finder does. In the macro below I'm setting the bounds of the window (position & size).
Run this from Script Editor.app to see what it does. Run in KM with an Execute an AppleScript action.
# User changes this name to suit:
set smartFolderName to "Pending.savedSearch"
set smartFolderDir to ((path to library folder from user domain as text) & "Saved Searches:")
set smartFolderPathHFS to smartFolderDir & smartFolderName
tell application "Finder"
activate
open alias smartFolderPathHFS
set bounds of front window to {525, 45, 1395, 817}
end tell
-Chris
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KM 7.0.1 on OSX 10.10.5