If you want to pick up New Avengers you should also pick up Avengers, both by Hickman. I don't think there's a person alive that isn't enjoying them.
Is this a challenge?
No...I agree it's pretty good even if i think it's way too long for what it is. Definitely the Avengers stuff to check out.
You could also try Mark Millar's Ultimates and Ultimates 2, which take place in the ultimate universe and things build up nicely into large scale shenanigans. Downside is it's not in the regular Marvel Universe, upside is the quality of the story. Also it's why Samuel Jackson is in the Avengers movies and it doesn't have a huge cast of characters you don't know exist.