You will need to go with 12 Reavers, I think. Hit like a truck, which is good but die like flies which is bad. Net result is, probably wanna take more of them.
You have Scourges, Trueborn, Razorwings, haywire grenades, and not to mention the Reavers so you have a lot of anti-tank. I tell most people this: if you must use Ravagers, use them with Disintegartor cannons. Absolutely ruthless. theres only so much anti tank that's necessary. I suppose if an Adamantium Lance shows up, you'll have to think on your feet, but... try it and see. Easy to swap out in any event.
Hold out bait to entice the enemy. Feign disorder, and then crush him.
-Sun Tzu, the Art of War