Ah, ok. I bought the dead money dlc when it went on sale for 400msp about a month ago, but never got around to playing it (that and I heard none of the weapons or Armour were transferred over because you played as a different character).
in Honest Hearts you can take 100 weight which is enough and its a good idea as there are lots of things to pick up in Zion. it connects with the main story in some ways, like if you killed Caesar you can have a conversation about it, due to the history
one of the characters with the Legion.