Hello:
I am developing an react.js application and already have a basic website working
(link removed)/. I would like some changes on the home page

Phase 1:

1. home page should have three boxes with some sample text (instructions)- I included a sample image
(you can signup and view it live here (link removed))

2. When I click on submit button in the text area, these instructions should disappear and prompts user to upgrade

3. Need a component with "upgrade" message that I can show/hide depending on user actions - see sample image

Please provide a quote for above and how long it would take.

after sucessful delivery of this I need capability for paid subscription service - I would like to know if you have experience integrating payment API's like stripe.