Quests in NG+ for the collection items (Dark Souls 3)

In General, I'm a hoarder and want the Persians to collect all items in DS, so before you start NG+ I want to clarify:

1) was the quest of Arbeca, though his ashes on the machine gave the old lady, not Yuri, in NG+ you can kill him immediately and put the ashes of Yuri? I have bought all the magic and technically I don't need him.
2) Quest Henri to the normal way it is necessary to pass or not - except for her sword that took after the ritual, on the other hand will be?
3) Irina should be forced to feed Tom's dark magic? For all that magic I already have, and Bron'ka arms of her bodyguard is also collected.
4) Quests other like linear and forks for different loot did not notice.