[OPINION] PBE Warwick Correct build?

So far everyone is following the starting recommended build on the PBE

The League PBE stream did it Redmercy did it and Brofresco did it

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Personally i don't this this is the best/most efficient build for . in my opinion it should be:

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final build maybe:

Basically a lot of slows, added lifesteal, with some mana, armour and AP items. This makes him better overall. he already has movement speed for ganks and damage reduction+lifesteal for sustain. From the gameplay i've seen he lacks reliable lock on after the engage, he either gets slowed/stunned or takes to much damage to stay in without his Ult.

i understand his kit is new and it will take some time to polish a proper build. I feel Riot forced these items onto the recommended list, and there is probably a better more optimal build out there.

What do you guys think? Better build in your opinion?

Edit: So i miss understood the Magic damage part, as it scales with his AD as Magic damage (based on: http://leagueoflegends.wikia.com/wiki/Warwick/Abilities)

so and is wrong, since his abilities scale with AD more than AP.

so i would just replace them with