Google Calendar Integration from AirTable & FreshBooks Invoice Creation Automation using Zapier

I need an integration solution to automate some tasks between AirTable, Google Calendar, and FreshBooks.

Google Calendar Integration from AirTable:
- Add Stage Date & Time to Google Calendar
- Update Stage Date & Time in Google Calendar if changes are made in AirTable
- Add Removal Date & Time to Google Calendar
- Update Removal Date & Time in Google Calendar if changes are made in AirTable
- Events should include notifications

FreshBooks Invoice Creation:
- Initially, create a Draft invoice based on the "Price"
- If Agent is not in FreshBooks, create Agent first, then create Invoice
- Future complexity: Invoice itemization based on selected Staging Options
- Update "Invoice Status" in AirTable based on FreshBooks Status

Ideal Skills & Experience:
- Expert in Zapier
- Proficient in AirTable, Google Calendar, and FreshBooks integrations
- Strong attention to detail and reliability

Please provide examples of similar work done.