Advise needed - Campaign "Sturmgeschütz Brigade 276"

[Imp]

Visibility is 11 because you start close to the objectives so don't have far to go. Just buy some basic artillery 82mm mortars or even infantry company with separate 50cm mtrs as visibility is 11.
Use smoke screen at the start to sprint along the roads or even risk a ride on a Stug.
Remember to z fire & suppress the enemy to make them easier to spot. Infantry Co with integral mortars & perhaps one with separate for the smoke plus a few other arty pieces & perhaps a couple of scouts let you find the enemy suppress & lay smoke to fight in "corridors"