Hello,
I've only recently started using my Blood Angels in crusade and have run a purely firstborn list. I also haven't used marines in almost 3 editions so I am very out of practice. That said, so far I haven't seen any impact from the Black Rage. My units generally don't kill more than a single unit per game in melee, no doubt a combination of my poor playing and things being so damn deadly.
I run a jump chaplain along some SG right now. I would definitely recommend having a psyker if you anticipate somebody else having one as well.
I don't think I can add anything else with my limited experience thus far.
Good luck!