Dear Client. Please don't ignore me because I may be the best match for your project.
I have read your project description carefully and got confidence.
I have 6 years of experience and robust knowledge in RoR and related fields.
Integrating payment gateway with Stripe, PayPal, Braintree is my Major.
I can upload this project to AWS, Heroku, Alibaba and Cpanel as you like.
Most of your requirements are clear to me but some of them need your explanation.
Due to having relevant experience and expertise, I am sure I will satisfy you.
I hope to have an opportunity of a discussion over chat.
Expecting your reply.
Best regards.
Thanks.