Customize subscription website using WordPress & WHMCS + Widget/plugin for dynamic mobile app visualization

We are building a subscription-based website, for which we use WordPress as a CMS and will be using WHMCS ([login to view URL]) as our customer management & billing solution. We need to integrate both systems in order to support the process of subscribing new customers to a certain subscription plan and we need to be able to manage the plans / subscription easily. All information from users needs & plans needs to be accessed as well. We have designed the subscription process and will provide process flow and design mockups. Requirements & Deliverables: - Functional and visual integration between process screens (in WordPress) and customer database (in WHMCS) - Develop web forms to gather customer and business information - Store registration data in Front End DB, needs to be accessible via API - Development of a WordPress widget/plugin for dynamic mobile app visualization -- The widget/plugin will show how the app looks in real time (kind of a "App DIY Builder"), according to user input data and limited selected module templates. Users will be able to customize design, colors, font, upload logo and product photos. We will provide input options and constraints, as well as design mockups. For references, see mobile website builder at [login to view URL] -- The WordPress widget/plugin (propose your preferred solution) that takes as input the user's entry data and updates the visualizer -- Design of the visualizer, according to mockups we will provide -- Development in HTML5 + JavaScript and design with CSS3 -- As mentioned, the user will have fixed options (templates) to choose from: for the "tab bar", "title bar", "font" and "colors". The visualizer will be updated as the user selects their options and fill out the forms. - Payment gateway integration with WHMCS with PayPal Pro - All configurations selected, data from user and selected template (for app) will be saved as a JSON file and needs to be accessible Final deliverable: *Website with Design, CMS, Manageable Membership system & all deliverables above mentioned integrated and working smoothly* Timeline: 4-6 weeks What we will provide: - WordPress template - All graphic designs - WHMCS license(s) - Mockups & Technical requirements doc - Process flows (for externally & internally)