Christology is the basis of your church plant. In other words, your theology - biblical or unbiblical, good or bad, will determine your church plant. Let me explain.
The Apostle Paul would deepen Jesus' words - I will build my church. Paul said it this way: We are his body.
Ok. So far, so good. Now, how do you view Jesus?
If your theology views him as being an extension of Israel - ie separate from all nations, to be holy via being disconnected from the world, your church will be shaped by that view. You will tend not to associate with those that are messy. You will find "biblical" reasons for your righteousness to stay away from the hurting and broken of the world, lest you become soiled.
Should your biblical understanding view Jesus as the incarnate Son of God who entered a sinful world to redeem mankind, and that would mean associating closely with sinners - that will also shape your church. You will become the salt of Mt. 5 - and you take your responsibility to enter a broken world very seriously. You will look for ways to express that need.
Biblical theology is huge. Understanding who Jesus really is will make a world of difference in what your church will ultimately become, and shape the impact you will have on your community and culture.