I am no expert, but I find it quite easy to start orgies when I want to, though I typically did so with a defiler, rather than regular commando.
The typical way I do it is to have a commander that focuses on two types of damage that really helps set up future surrounds. I find taking one that does injury and/or disgust damage is the most helpful for setups.
If you have barrier and/or the chozen have good relationships, it works best to ambush immediately. However if you've set them up to hate each other and don't have barrier yet, there are advantages to try to delay the commander so that it would end one or two turns before the first chozen shows up. This allows you to set up a one or two turn surround with regular attacks and damage one thing that the defiler won't damage. If you've got a hate/lust defiler, it helps to set up one level of injury as a compounder to make the capture more damaging, or one level of exposure to help damage the other chozen's more.
In any case, the core strategy would be to capture each chozen with your commander once, and do them enough damage so that they have enough openings to surround them two more times afterward. And also to give them as little space as possible to deal attacks. There should never be 2 uncaptured/2 unsurrounded at once. And if any of them deals high damage (10+) they should not have room to deal their damage even one turn.
You want to minimize the damage they can do to the demon horde, because as soon as any of them is flying, you fucked up.
With this setup, you want to focus on getting each of their hate/lust/inj/exp up as they all help compound the damage done.
Then pay attention to when their surround times are somewhat synchronized. It will last as long as the shortest surround time. Try to aim for it to be at least 8.
Anyways, done with my first loop from yesterday and now thinking about trying a fresh run with distortion(do not want to go into forsaken stuff yet). Considering what was happening on normal t3 i am worried about how crazy can those get. so how many distortions is manageable? 1? 2? 3?
I did one distortion (rampancy) in my first run. It was a right pain in the ass. As far as I can tell, I had to trigger it every battle or it would be lost. It resulted in high EE generation (30 for one chozen), but also complete removal of all Trauma. This meant that if ever she lost the distortion, or I didn't trigger it for a battle, then she would only be generating 1 EE, while others would be generating 15. It caused more reloading than any of the other things I tried. You also generally avoid orgies, which means it's harder to create trauma's for the other girls as well. A T4 break girl was a lot easier to defeat in the final battle as well.
With that said, it's probably easier to do one rampancy at a time.