Convert 4-Floor PDFs to DWG

I have complete PDF plans for a four-storey building that I need redrawn in AutoCAD so I can move forward with renovation planning. The task is straightforward but must be precise:

• Create an accurate DWG for each floor directly from the PDFs.
• Retain every structural column or support exactly where it sits on the original plans and strip out all non-structural walls as requested.
• Add clear, legible dimensions and measurements so the drawings are ready for the renovation team to reference.
• Organise everything into sensible layers that follow industry best practice—please recommend a clean layer structure (e.g., separate layers for grids, columns, annotations, dimensions, etc.) that keeps the file light and easy to navigate.

Final deliverables are:
1. Editable DWG files for all four floors.
2. Matching PDF plots for quick viewing.

When you reply, let me know:
• A brief outline of similar CAD conversion work you have completed.
• Estimated turnaround time.
• Your quotation.

Accuracy and tidy layering are the priorities, so if you have a proven workflow for converting PDF to CAD while maintaining structural fidelity, I’m keen to hear how you would tackle this job.