You will never get another chance like this
You will never get a greater chance to decide over your home than when you build a new house. This is a unique opportunity to create affinity and harmony between the various parts of the house. Or, if you prefer, to create contrasts and strong impressions.
Whatever your desires we have the staircase for you. Think through how you want your staircase to be in good time. The earlier you consider the choice of staircase, the greater the chance of experimenting.