Review Current CRM and complete updates

Review my current CRM and update with the attached changes. Provide advice to update CRM. Ensure it can run as an app for mobile as well as web based applications

Please note I have updated the scope of work - please review and update quote

Current CRM
Frontend: React.js (for interactive user interface)
Backend: Node.js with Express.js (high performance)
Database: PostgreSQL or MongoDB (efficient data management)
Authentication: JWT/OAuth 2.0
Hosting: Hostinger, AWS, DigitalOcean (based on your preference)
Calendar API: Google Calendar or custom scheduler
Real-time Messaging: Socket.io or Firebase Messaging
Report Generation: PDFKit, jsPDF, ExcelJS libraries for document handling
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