Vindicator is fine. Get more.
Two Predators? I hope they have Turret Autocannons. Sponsons don't really matter, both choices are good. But I hope you have Turret Autocannons.
Defiler is fine. Get more.
...Five Obliterators is not nine. Just saying. Nine Obliterators make a lot of people very unhappy.
No. Not really. They just have to not look like Berzerkers.
I used Dark Angel veterans and a lot of kit-bashing to make mine. But, I'm like that.
Yes. And Page 81 of your Codex. Yes. Being inside a vehicle is
better since the distance is apparently measured from the hull. Some vehicles are rather big. Do with this information what you will.
I know. That's why I said it.
I mean, you've got what you've got. I'm going to at least
try and tell you how to make something useful out of it.
Depends exactly how many you have of them. And whether or not you're going first. But, ultimately, it depends on the person you're playing. Yes.
Winterwind did the maths on it once (because he likes Berzerkers). I remember what goes on in this thread. Because I love you. Like Papa Nurgle.