I wouldn't worry about selling out just yet. I'd be more worried about selling in general. The odd thing about BBQ, is that while folks get irritated that you're sold out, it seems to draw them back to try what you sold out of.
Out here, the gateway meat is pulled pork, a decent $5 pulled pork sandwich is how you build business. Brisket is a tougher sell.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."