Questions on killing the Van Graffs

[ReadyToPlay]

I have completed "Heartache by the Number" in Cass' favor, and now the Van Graffs are hostile to me. I have also completed "King's Gambit" by plasma-rifling Pacer in his sleep, thus casting blame on the Van Graffs. Now I'm actually about to go to Silver Rush and kill them all in order to loot the place. But are there any more quests that involve fighting the Van Graffs? Should I wait for those quests to come about or is it okay to kill them now? I don't want to lose the XPs if there are quests available.

I believe the Brotherhood of Steel would order you to kill the Van Graffs, but only if I helped Hardin become Elder, which I didn't. So are there no more quests left to take out the Van Graffs?

[talgaby]

Nope. Also, even if you kill them before being tasked with, you'd get the same rewards.

[BadgerMilk]

The Van Graffs is one of those things where you can only do so much of them if you want Cass to stay alive. Eventually they ask you to kill Cass, but if you talk to Cass before she asks you to hunt down the people who raided her caravan back when. You do that and then you get a choice quest to kill the Van Graffs or Cass. Usually I do the Graffs till they want me to kill Cass then I turn on them and loot all their awesome stuff. But yeah, I don't think you get anything special if you stay with the Graffs besides reputation.

[ReadyToPlay]

Isn't there a bug that makes Vendortron stop selling Gun Runners Arsenal weapons if you kill the Van Graffs with the GRA DLC loaded? I had GRA DLC loaded while I killed the Van Graffs, but afterwards when I went to the Vendortron, it still had all the GRA weapons. So has this bug been fixed, or was I just lucky?

This is the bug in question:

From http://fallout.wikia.com/wiki/Gun_Runners_Arsenal :

" If Gloria Van Graff is hostile to you due to the companion quest Heartache by the Number and you installed GRA, the Vendortron will not sell the GRA weapons that are originally sold by Gloria Van Graff, even after killing her. If the Vendortron resets his inventory, the GRA weapons will still not appear. This results in being unable to attain some of the GRA weapons such as Sprtel-Wood 9700 (GRA), Cleansing Flame (GRA), and The Smitty Special (GRA). Uninstalling GRA, killing her, then installing GRA fixes this problem."