AI Lead Qualification Workflow in n8n: GPT-4o Scoring, CRM Sync & Slack Alerts

We're looking for an AI automation specialist to build one production-ready lead qualification workflow in n8n. Leads arrive through a webhook from our web form. Each lead should be passed to GPT-4o for qualification and scoring against simple criteria we provide. Qualified leads then sync to our CRM and trigger a Slack alert, while the rest get logged to a Google Sheet for manual review. What we need: One clean n8n workflow (webhook to GPT-4o to CRM, Sheet, and Slack) Sensible error handling plus a short Loom walkthrough showing it run end to end Light documentation so our team can maintain and extend it later The scope is intentionally tight and clearly defined. We care about clear communication and someone who builds for real operations rather than a one-off demo. This is a fixed price project at $100, and we'd like to wrap within 3 to 5 days. If you've built similar AI lead workflows before, tell us the exact stack you used.