OP said his goal is to make the British Empire. If we take that to mean the same as it did historically, then Religious is highly unnecessary and Humanist is superior.
I would say neither is necessary if you're not going to be conquering Europe and stick to colonial/trade company regions, unless you have a specific policy in mind. Colonies in the new world are always your nations religion and Primary Culture (and once the colonial nation is formed, the act of converting the locals is your CN's problem, not yours), and putting territory into trade companies negates the problems with wrong religion and culture elsewhere. Plus, it's very unlikely that unwanted reformation centers jump across the English Channel (especially if your are one of the first to embrace Protestant or Reformed when you control all the British Isles.
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