My gut feeling is this:
Weems and Thomas will be primarily ST, and rightfully so.
Hester will get some time at WR, but he'll primarily be ST as well.
Sanzenbacher will be cut.
The starters will "technically" be Marshall and Jeffery, but there will be A LOT of 4 WR sets.
When there isn't 4 WR sets, there will be 3 WR-2 TE sets, with Marshall, Jeffery, Bennett, Davis, and Rodriguez.