I'd be more concerned with the predicted QLCS forming ahead of the cold front, or particularly those tiny pockets forming over Arkansas more than anything. Lines themselves aren't particularly impressive outside of straightline winds and hail, with maybe a quick spin-up or two forming in isolated pockets here and there. Storms out ahead of a line and all by themselves, though? Those tend to the nastiest because they're not competing with any nearby storms for energy.
Here's hoping we see a case where the cold front catches up with the line of storms and undercuts them, like what's happened a number of times this last Spring already. A lot of warm air is certainly being pumped into the region out and ahead of this stuff, though, which isn't good.