Prosite Configuration and Customization

I have a website with prosite on it and I don't want people to see the plans table when creating a site because I want them to just register and get the website for free for 60 days before I can start charging them. What do i need to do to remove the plans and payment stage from the site creation in pro sites but still want them to be able to pay after a given trial period. Please i need a practical approach to solving this problem.