Identify your singularity
When I say singularity, I'm referencing the one thing your church does better than anyone else. It's the spark that gives life to everything else. If you removed it, your church would loose its uniqueness. It's imperative that you deconstruct everything you do, down to this one singularity.
The logic behind this is as follows. Your website needs to have clarity throughout. If you have multiple singularities you focus on, it will feel disjointed and confusing. Here this is the problem with templates: they assume someone else's singularity and applies it to your website! You could imagine how hit or miss this can be if it's not identified right away.
Identifying your church's singularity will save you time, money, and pain when designing your church website.