so you think 3 units of 16.
i would actually dig halbards, but you have to buy them seperatly

(my chosen are the normal great weapon guys, but i slapped shields on their arms and their poses could look like either
GWs or Halbards)
in my limiited expierience, skaven tend to stick around in
CC for a while(especially with Steadfast) and once they do break they are so weak in numbers that they will keep running off the board.
the skaven player runs his slaves in units of 20 and uses a unit of 40 clan rats as the basis of the army. other possable units are 2 units of Jezzails, 1 Warp lightining cannon, a unit of 40 Plague monks, plague censor bearers, Screaming bell and a plague furnace and assorted weapon teams, possably 4 Rat ogres.