Great advice from all of you. Thanks for your input.
I've decided to scratch off the "3 sliders" option, and also the platters. I'll keep it simple with these options:
-Brisket Sandwich $8
-PP Sandwich $8
-4 Ribs $8
-Potato salad, coleslaw, soda $1.50, or all 3 for $3
I'd love to bring more staff down, but my budget is TIGHT. I've never vended before (nor have I ever been to this festival) so I have no idea whether I'll sell 20 servings or 200. I'd rather kill myself working for the day than kill my wallet!
I just spent a couple hours making (what I think is) a pretty snazzy menu video. I'm going to mount a 32" LED TV vertically beside the window as a menu (picked up a use one with mount for $150!) and run it on repeat.
Waddaya think of that?