Hello, Sir
I have reviewed your requirements carefully and I am always here to help you.
I have been exploring this field during 8 years and now I have a nice team of developers working with me who are experts in different technologies/fields like Shopify, PHP, HTML5, MySQL, Laravel, Angular js, React js,, Vue js, Node js, Python, Flutter, React Native, Mobile Development and Blockchain.
The final cost and timeline will be given after the complete analysis of requirements with your mind.
Thanks.
Stefan.