Does anyone have a cheatsheet for LightTable, even better for the paredit plugin, it seems my google-fu is not up to finding one?
Only because the others have not said it yet. You can bind multiple actions to one shortcut as the actions are stored in a list:
:editor {"ctrl-shift-up" [:paredit.grow.right :paredit.shrink.right] "ctrl-right-down" [:paredit.shrink.left :paredit.grow.left]}