You could manage them all to be honest, but you would struggle on ony though, so i'd be unsuprised if people didn't want to bring you (you risk dying to a melee + breath/cleave combo). A few upgrades could sort that out though so it's not a big problem.
However, you more than enough gear naxx10 and maly10. I think I did naxx 10 with like 24k unbuffed hp. any pug who says your gear isn't good enough for naxx 10 is quite frankly, retarded.