PHP website's integration with 3rd party platform

Following is scope for the work: 1) Mini table in Online Instructor Led Training and Onsite training product page 2) Moderator Assignment, Add/Show Training from User Edit page 3) ADD TO CART button separated for a particular batch (front end + back end) 4) Student Front End (Check Training Sessions, Join Training Sessions and Watch Recordings) 5) Trainer Front End (Check Training Sessions, Start Training Sessions and Review/Publish Recordings) 6) Individual Training Days for each Training Batch (Admin -> CMS -> Trainings -> Individual Dates/Times/TZ per session. + DB change) 7) Trainer <-> Student email Communication with File Sharing from Student / Trainer Front End 8) Individual meeting setup and delivery (attendee registration through a URL link and moderator management through admin panel) Please provide only Fixed Quote. (no hourly rates please)