Had a quick look in my own dconf and there's an entry called exec-arg (same path) with the description "Exec Arguments". That looks like the place to add the options.
(Not sure how to go about adding this if it's not there though. Editing a value and modifying an underlying schema are a bit different in difficulty, especially if the path is deprecated or not supported by the version of Cinnamon in use.)
The ~ issue I'm not sure about. Perhaps there's $@ / $1 / %s / %1 or similar parameter support, but I'd have to root around the Internet or source code to know for sure.