Update DA Architectural Drawings

I have an approved set of site plan and section drawings in PDF only, and I now need them redrawn so they reflect several design tweaks required for a Section 4.55 (1a) modification under NSW Planning legislation... (Budget: $750 - $1500 AUD, Jobs: 3D Modelling, Architectural Engineering, AutoCAD, Building Architecture, CAD/CAM, Landscape Design, Revit)