Two things. First, definitely pecan lodge over lockhart, which is, IMO, hit or miss on being elite bbq.
2nd, so you've called PL to confirm they have meat (never known this to be a problem since they opened the deep ellum store) and are headed that way. Assuming you get there and find a long line, check inside for a seat at the bar. You can order from the bartender and skip the line if you snag one of the barstools.