Custom Carpentry Decking Spreadsheet Development

I'm in need of a bespoke spreadsheet for my carpentry business, specifically tailored for decking projects. This spreadsheet should allow me to input the square meterage of a specific job and automatically calculate the necessary quantities of beams, joists, screws, nails, and decking boards per square meter.

The ideal freelancer for this project should have:
- Proficiency in Excel or similar spreadsheet software
- Experience in the carpentry or decking industry
- Ability to create complex formulas and calculations

The spreadsheet should be able to calculate for each job:
- Material quantities
- Cost estimation
- Labor hours

Additionally, it should take into account:
- A waste factor
- Delivery charges
- A project timeline

This tool will greatly enhance my efficiency and accuracy in project planning and execution.