I'd say it's fluid.
Discrete cells earlier along I35 around 4p (?) and then another round around 8 (?) when the dryline arrives.
A supercellular storm mode will be favored with initial cells in
either of these areas. Large (potentially significant) hail will
be possible with initial discrete cells, as this environment
checks nearly all the boxes for a large hail event. Ample shear
will allow for robust updrafts to occur, with high CAPE and shear
concentrated within the hail growth zone between -10C to -30C. A
forecast wet-bulb zero height around 9500 ft AGL is also a
favorable indicator for large hail, along with the nearly dry
adiabatic lapse rates present through the mid levels. Most model
soundings indicate a SHIP parameter of 2.5-3.0, and SARS analogs
indicate many past events with hail in excess of baseball size
with similar environmental conditions. It appears the only factor
working against a potentially significant hail event is the
possibility of rapid upscale growth into a linear storm mode.