Invoicing Front-end Customization for Existing Website

I'm seeking an experienced WordPress developer to customize and enhance the front-end invoicing and dashboard features on my existing website. The goal is to improve the user experience, add functionality, and optimize performance, all while maintaining the current design and brand consistency. I’m open to suggestions and recommendations for effective enhancements. Key Project Requirements: Front-End Dashboard Customization: Develop a user-friendly invoicing dashboard for clients with real-time data on sales, invoices, and other relevant metrics. Integrate essential data visualizations, including monthly and yearly sales comparisons, product and category performance, and client activity. Allow for import/export functionality for data, lists, and charts in formats like CSV and PDF. Invoicing System Customization: Build out features for creating and managing invoices, quotes, credit notes, and sequence options. Add the ability for clients to manage their profile information, payment methods, and select their preferred invoice templates and currency formats. Enable seamless conversion from quotes to invoices. Performance Optimization & Maintenance: Optimize front-end performance, ensuring fast load times and smooth interactivity. Provide recommendations for regular updates and maintenance to keep the system running efficiently over time. Additional Details: Timeline: Flexible, with a target completion of one month. Pricing and Scope: Open for discussion; happy to review the project scope and adjust as needed. Collaboration: I’m looking for a developer open to discussing functionality suggestions and long-term maintenance plans Members will have access to an invoicing and account management area, including tools for managing invoices, sales, payments, stock, and supplier information. Implement role-based access control to manage different levels of permissions for admins, managers, and clients. Prefer using [login to view URL] for data visualizations. Please incorporate bank transfer options as the preferred payment method for invoicing. The user interface design will require only minor tweaks while maintaining the current design and brand consistency. Implement UX improvements focused on enhancing user flow and reducing navigation complexities while maintaining the current design and brand consistency. Implement custom user roles based on specific needs and permissions of different user types. Incorporate essential invoicing features like "Other." The customization should include basic tweaks to the invoicing templates, such as logo placement and color scheme adjustments. Please integrate a credit card payment option for invoicing.