Hello,
I can surely customized your plugin with you mentioned functionalities in which i can setup your payment gateways ,Shipping Charge Add, Banner alingnments. I am an experienced developer with over 6 years, My expertise is in PAPIs Integration, Payment Integration, WordPress, WooCommerce, E-Commerce, Wix, Shopify, HTML 5, CSS 3, Bootstrap 4, UX/UI, PSD to HTML, and 100% mobile responsive and cross-browser compatible.
Hope we could talk,
Thanks