I'd want to get us out of there. Period. I had to ask hubby what "SKS" means so clearly (1) don't have a CCW to consider, and (2) don't have what it takes to count rounds. (Count, yes, but is he out or waiting? I have no clue.)
I'd probably freeze, get low behing the kiosk, stuff a hand over DS's mouth to keep him quiet, then get ready to run at the sound of reload or protect DS in the event of a face to face encounter.