Interate B2 backblaze storage and payment system (2Checkout) for an existing Laravel code

I am looking for a serious freelancer who has very strong background in AWS S3 as well as other storage services, payment systems,…to help us fix and modify an existing code (in Laravel 5). We need the following things to be done: 1. Integrate the B2 Backblaze storage: our code was already integrated with Amazon S3 and RackSpace. We need it to be integrated more with B2 Backblaze storage option for upload and download data directly from B2 Backblack ([login to view URL]) 2. Integrate 2CHECKOUT payment option + pricing table (we already have the theme): our code was already integrated with STRIPE, we need to add more or replace STRIPE by 2CHECKOUT payment for user subscribing and recurring options. ([login to view URL]) 3. Add a user bandwidth measurement, bandwidth limit and maximum file-sizes for each type of users Please read careful and only bid if you can do. Thanks a lot for reading!!!