Be very careful of major projects. You decide you have a great tax preparation package. And yes everyone agrees it is. The only problems is that your marketing effort cannot compete with the existing businesses, and so no one knows about your tax package. Leave room in the budget for marketing or don't undertake the idea.
Sales are what drive the ship.
Meet your deadlines. Your customers want to have confidence in your product or service. Missing a deadline is a sure confidence killer. Look for tax savings. Everyone want to keep their accounting costs low and nobody wants to go to the doctor, either.