Need advice on Tendrils deck.

[sigar]

I am currently running the deck mentioned below and I want to know if Duress could be replaced with Pact of Negation and what should I remove to add 4 Street Wraith?. If it's any help, everyone seems to play Control and Stax here. Thanks in advance.

5 moxen
1 Black Lotus
1 Lotus Petal
1 Sol ring
1 Mana Crypt
1 Lions Eye
1 chrome mox
1 mox diamond
4 chromatic star

4 Tendrils
4 Dark Ritual
4 Cabal Ritual
4 Infernal Contract
4 Night's Whisper
4 Duress (pact of negation)
4 Brainstorm
1 Imperial Seal
1 Demonic Consultation
1 Demonic Tutor
1 Vamp Tutor
1 Necropotence
1 Ancestral Recall
1 Time Walk
1 Yawgmoth's Will

1 Underground Sea
1 island
4 Polluted Delta
2 Swamp