Integrate Weebly API into my website

Hey! So I'm integrating weebly api into my website, I'll provide all html skeleton and you'll have to implement the following flow: 1- User comes to our website 2- Click on the package del want ( Free, Tier 1, Tier 2, Tier 3, Tier 4) 3- Checkout at our stripe account 4- Then redirect to wix and create a login/pass ( Weebly will take it from there) 5- Then they come to my website and click log in, and redirect to weebly to edit their website User must NEVER know they are in Weebly platform. So transaction have to be smooth. I'm a developer but just don't have time to execute, I'll help you in minor things.