Hi. I have looked at your project brief and will like to present you with my general approach as well as an overview of my experience. First and foremost, the platform of choice as most other developers would suggest for this type of website, is wordpress with woocommerce as the ecommerce backbone. It's easy to develop and maintain with minimal cost and time involved to have up and running. Management and ease-of-use are also very key factors and by my experience woocommerce surpasses other similar systems in this regard.
Generally I would do my best to cover all bases by guiding you along the way with everything you'll need to have setup for your site. You've already mentioned two of the payment methods, great. We will also need to go through shipping methods, the relevant policy pages you may need, along with a list of other requirements.
I have a total of 10+ years in the IT Industry including two Microsoft Professional Certificates and have been working with wordpress for the past few years. Also, please take a quick look at my profile/feedback and you'll notice I'm a 100% trusted freelancer, a reputation built from perfect accuracy, attention to detail, excellent efficiency and great communication.
Thank you for reading my proposal and I look forward to hearing back from you toward the start of a healthy working relationship. I'm from the Caribbean so there's no language barrier between us and our time zones should be close as well. Kind Regards, Kenny.