A couple of questions to help me on a build options for a heretic run

Hey everyone. I'm planning on a heretic playthrough and was hoping for some build advice.

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I was planning on going heavy weapons or melee. I was wondering if psyker would benefit heavy weapons since it seems like a natural fit?

I'm also considering melee because I've heard there are a lot of good heretic melee weapons. But I've already made a blade dancer so I was hoping you all could tell me if biomancy/warrior would feel different enough from blade dancer.

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Thanks