The expression "...leaps of faith" (line 64) refers to

a religious conviction that the business project is definitely going to prosper.

confidence on the various concrete evidences that your business model will surely be successful.

everything you do not know about the returns of your investment and should not worry about.

knowledge about historical precedents that are applicable to your company's current situation.

assumptions about the aspects of the business you propose that are carefully thought of but not tested.