The answer is, Only on your knees will you and your leaders find the answer. The knees are the starting point. Value the habitual over the novel. Do the right things before you attempt the big things. Learn your history.
History offers the fact that just about everything has been tried before in one way or another.
But it is Wesley's work that has impacted future generations far more than Whitefield's. Preaching without the reinforcement of deep community isn't really worth all that much. Fly in formation. Find and read great authors who can give you a point of stability and a solid sense of direction. A.W. Tozer with respect to your concept of God and worship, Stanley Money about evangelism and the Kingdom.