There are 3 teleporters in Barnabus' cave (one on the ground near the lava, one on a mid level ledge and one on a high ledge), two of which have generators that need to be disabled in order to get to Barnabus (is that what you meant by both levers?), though it is better to explore all 3 first.
You should be able to talk to the statues the way you would any NPC; there are 5 in the outer headquarters of Keara's fortress. Did you have a cutscene conversation with Keara when you entered?
In the US release of D2:ED there was a bug where 4 of them did not give the clues they were suppose to, but you could still name them (getting the answers or the clues from the forum or walkthrough). I would assume that is fixed in DKS / FoV, though.
Level 34 should be ok for the final battle in the Hall of Echoes, but another level or two would help. You need to move as soon as the conversation is over (jump forward and to one side); once you get into the main room you should do much better than the hallway where everyone can get a shot at you.
I need help with a battle (Spoilers) Ygerna's memory (D2:ED topic)
