Telegram bot

Need to: 1. Registration in the bot via Google OAuth with mail from a specific domain 2. Binding in the google admin panel gsuit to certain organizational units (depending on the tariff, there will be 3 tariffs) - I will provide access to the admin panel 3. Acceptance of payments (it is advisable to confirm the payment manually if you send a photo of the check to the bot and the admin checks the payment. This is necessary since the payment is in dollars and euros, and our payment systems do not all work with foreign cards, they even pay by Western Union) 4. Affiliate program (classic multilevel) 5. Sending messages 6. Desirable admin panel in the form of a site - There is a bot for an example, but it needs to be tweaked @paidsubscribebot - Everything is fine there, but you also need google account authentication through OAuth 2.0 and work through the Goggle API Admin Gsuit - I use google admin to set up the client's browser with passwords and bookmarks, and depending on the selected tariff, his account is moved to the desired organizational unit with certain settings. I paid for one tariff - certain bookmarks and access to sites were opened in the browser, the subscription ended - the bookmarks disappeared, since the account was automatically moved to another group [login to view URL] - All our students receive special accounts from Google in our domain - Gsuit for EDU, Therefore, it is required to tighten the authentication through google. How much will the work cost and the question on the timing?