Let me stop this right now.
You want people to lend you guns without being present? You best be forking over a safety deposit equal to the value of the gun and even then I'd caution people. Look at it from the flip side: would you just lend some stranger your photo gear and hope for the best?
Second, you're asking for freebie loaners AND expecting people to help you out if they attend the shoot? You'd best be offering a half decent meal at minimum. Or would you like to lend me your camera, and you could wash my car while you wait?
Third, your shoot is in "downtown TO": if it's anywhere else than private property (like your studio) you'd best have formal permission to be there. Otherwise, once again, I'd warn the prospective participant to beware (it's your guns on the line).