Create AutoCAD (2006) 2D plans from paper copies

I have a set of 4 A3 sized print-outs and photocopies of some house plans which I need re-created in AutoCAD in 2D (not 3D !) These have been scanned into a number of A4 PDF files (attached) The file version *must* be readable/writable by AutoCAD 2006, as this is what my architect is using. The photocopies consist of older, manually drawn plans with Imperial measurements, i.e. Feet/Inches The printouts were created using AutoCAD 2006 based on the above plans, but the source file has been corrupted. Note: the dimensions shown in the AutoCAD printouts are in mm. The task is to re-create the plans as accurately as possible in AutoCAD 2006 format, using the photocopied Imperial plans as reference guides for detail. All lines, Dimensions, Text should be reproduced. The dimensions in Feet/Inches should be converted to mm (millimetres in the metric system) The printouts are scaled 1:100, the photocopies of manually drawn plans are also 1:100, but the scaling may not be as precise. I have attached the PDF files