Automate Invoice Workflow With n8n

I need an end-to-end n8n workflow that takes over the entire invoicing process for my business. Right now I’m entering every charge manually in what are essentially “spreadsheet-style” tables saved inside Word documents, then converting them to PDFs and emailing them by hand... (Budget: €750 - €1500 EUR, Jobs: Automation, Data Integration, Excel, Google Sheets, n8n, PHP, Software Architecture, Visual Basic)