Moodle - Wordpress - Merchant Services integration

We need a single sign on an registration through wordpress to moodle. With API. We have a blank slate with moodle and admin access. The wordpress site is already created. You will have FTP access (wordpress) Root access to server (wordpress) (If you can explain the need) Wordpress admin account Moodle Admin account GOALS: 1. Single sign on between wordpress and moodle 2. Pass data through API 3. Intigrate PDF form printing php function (already written) 4. Help design fluid registration process and login / account areas. (I will make the pages / forms / code whatever you need to make that happen. Project Outline: CT COURSES MOODLE CLASSES TO BE PUT INTO MOODLE SYSTEM (The course content is being developed by someone else) NAME:SUBNAME 1. The Creative Brain: Multiple Intelligence Classrooms 2. Intelligence Reframed: MI Learning Stations 3. Transformed Anger: The Surprising Purpose of Anger 4. Managing Innovation: How Great Teachers Inspire Students 5. Engaging Diversity: Building Student Engagement 6. Literacy Empowers: Multi-Sensory Language Instruction 7. Mind Shift: What IQ Tests Miss 8. Synergy Mentors: Learning Across Disciplines 9. Equity Partners: Achieve Educational Equality 10. Technology Toolkit: Innovative Ways to Inspire Students 11. Nature Collaborates 12. Digital World USER FIELDS WE NEED IN WORDPRESS AND MOODLE (shared fields between moodle and wordpress (also necessary for registration) (most of these fields also will be printed to pdf using custom php and Gravity Forms -> PDF EMAIL - LOGIN / FORGOT PASSWORD USERNAME - LOGIN PASSWORD - LOGIN FIRST NAME LAST NAME PHONE FAX PSU ID NUMBER DATE OF BIRTH STREET ADDRESS CITY STATE / PROVINCE / REGION ZIP / POSTAL CODE COUNTRY SCHOOL NAME SCHOOL PHONE PAYMENT OPTIONS: WE need to authenticate the users and register them after a few conditions are met: CREDIT CARD CHECK (This will register them to the class and email them mailing instructions for the check DISTRICT TUITION VOUCHER (Can this be variable? Some vouchers are 2/3 off price. But the teacher still needs to pay that 1/3 of the class. Is there a way to implement this without having to have the teacher call us and we take the credit card info over the phone? CURRENTLY WE HAVE GRAVITY FORMS INSTALLED TO HANDLE PASSING DATA There is a PHP function that creates a PDF of the registration data and sends it to a university. That function has to remain a part of this process. WE also need help designing the registration, login, and sign up forms work flow. Perhaps a multi step form? Someway to pull user information to registration page once user is logged in as well. We want the Paypal on our site. We have basic woo commerce integration ability.