>>96321861
The absolute minimum for despoilers in a WE list is 40, whether thats 2 units of 20, 4 units of 10 or 1 unit of 20 and 2 units of 10 is up to you. Ideally you'd want more but this is the minimum.
You're allowed shooting in a WE list contrary to popular belief, you should just avoid heavy weapons whenever possible because the WE want to be constantly advancing into the enemy and Heavy weapons want to stay still.
You should bring TSS squads instead of tacticals tho, they are more on theme. Volkite Chargers are particularly fun in WE because they're assault weapons so you can double tap with volkite and then still smack in melee like your TSS is a weaker legions despoilers.