Build a Bubble.io App with internal API/Webhook

Hello, I have a lead generation agency, and we are looking to develop our web app to start scaling our services. The Web App will be used for: 1. Billing: 1.a) Generate Payment Link with Mollie for Setup Fees manually + via API or Webhook 1.b) Save payment methods with Mollie through user web interface 1.c) Bill new leads automatically after 24 hours 1.d) Generate Mollie coupons via API or Webhook 2. Account management: 2.a) User list / CRUD on admin dashboard 2.c) Create users via API or Webhook 2.b) Profile page for admins containing user informations 3. List Leads generated: 3.a) Save in database each new lead via API or Webhook 3.b) List all leads for each user 3.c) List all leads for all users on admin-side 2 levels of permission: admin OR user Here are the mockups: [login to view URL] UI kit is ready to use/for integration, no design. The internal API and/or webhooks will be used for Zapier. It should be based on [login to view URL] Consider the opportunity to work long term together. Thanks!