Your Sea Witch build is... eh.
Death Strike, Hex, Parasite, and Manashield?
Farming would be tough, and going Scepter or Diving Rod is also a bad idea. You'd have like no mana for your shield, and no damage from no +int. Cloak of the Unseen is a much better choice, but even then its not amazing. Going Death Strike is really not that great. You can get crit from a sword, and trying to level a passive crit early is tough to say the least. Which is fine, considering you'd probably save Hex for later. All in all, drop Death Strike for a good farmer, and probably Parasite for mana regeneration considering you took Mana Shield.