I'm not sure you should bother trying to fit a Stank into anything less than 2250 pts or so.... I would generally run the following:
* A general(probably Arch-Lector)
* A BSB
* A Wizard Lord
* A 2nd Wizard or a WP
* A 10-man crossbow block
* 2 x 30 state troops with one detachment ea.
* Flagellants if enough pts
* Possibly 10 Knights as flankers - probably with GW's
* If not Knights, Greatswords in Special
* Pistoliers
* Cannon
* Mortar
* Helblaster(I find the Helstorm to be too inaccurate)