tareas para mi app ionic angular con backend en express

Please prepare a quote for the following items:
Send photo (the upload is slow)
Migrate all Sequelize queries to stored procedures
Change the buy/sell flow
Implement dispute/refund flow
Integrate payment gateways for purchases (PayPal, Stripe, Payoneer)
Integrate payment gateway for withdrawals (Revolut)
Integrate shipping API (EasyPost)
Enable chat photos to be saved to the gallery
Integrate Trust Wallet