Modify PHP Pro bid software to use Bitcoin and others -- 2

Freelancer or company taking this job will be working with PHP Pro bid Note: Security should be top priority in taking this Job. 1: Redesign themes and templates for Auction, Store Script 2: Design and Build a Secure auction bidding and payment system to accept Bitcoin 3: Design and Build a secure Escrow system. 4: Add sms mod 5: Implement a Two Factor authentication system for log in. Each new modification if possible should be able to be changed in the admin panel. Freelancers taking this Job are to work closely with me on the design layouts and functionality of the site. I would also require regular Live design and functionality previews . Payment will be made at 100% completion of the job