Build an Online Store

Hi I'm building an Opencart E-commerce website that needs additional product customization. The website is geared towards print. This means I need to allow the customer to select a product i.e. 200GSM laminated, then print size i.e. A4 or custom size, then the quantity, then the user uploads their artwork. We'll also supply templates for the user to use - psd, pdf and ai. The client then checks out and pays their money. Current payment gateways are Stripe and PayPal. The artwork is then checked in the admin area (We need to make sure that the files are sanitised) Once approved then the user can sign them off and the printing starts! I'm keen to also implement a comment system between the admin and client so we can review\edit the artwork. The client can even amend or re-upload the artwork if necessary. We'll need full order history with reprint function, most of this is built in to Opencart. Would be nice to have a blog and image gallery as well. I'm looking for an experienced php and Opencart developer or team that can turn this around relatively quickly and at a sensible rate. I'm happy to prepare a full project map with functionality. This will help speed up the project and make it easier to quote. Happy to recessive creative input and I'll also have some example sites to reference. Ideally looking for a UK developer but open to invites. I'm currently based in Dorset, UK. Please provide relevant examples, CV and anything else that might help you win this project.