Kedge Keep solo for 57 epic shaman?

[DrKvothe]

I've never been to kedge keep, but it seems like an interesting place with good loot and a high ZEM. I have some questions:

a)At 57 with my epic, will I likely have any problems with mobs if I stay out of Estrella's room and stay away from Phinny? In particular I'm curious about Undertow and his placeholder and the seahorse cave area.

b)Should I buy a rebreather or shield of prexus (if I can find one) before attempting this place? Or just use self-cast enduring breath until I can loot a shield of prexus? Will the seahorses or mermaids (not estrellas, but the other ones) dispel enduring breath?

Any tips before I give this place a try?