Buff order on charmed pets

[Something'Witty]

So I play a chanter on 99red and am trying to figure out how to bury charm so it won't get immediately dispelled in PvP. I figure the easiest way to do this would be to first charm the NPC (no tash), then buff it, then cancel charm, then tash it, then recharm. That would make the buff / debuff order: 1) Tash, 2) buffs, 3) charm.

So I have some questions:

1) Do charmed NPCs maintain their buff / debuff order after charm is broken? I assume the answer is yes.

2) Other then the Bracer of the Hidden, are their any other items that are targetable insta / short cast time clicky buffs?

3) Anyone else have any ideas on how to bury charm?

Thanks in advance for any constructive comments.