3d modelling - Autocad - External building

We require a 6 storey apartment building to be modelled in Autocad. External only. It must be totally accurate and in 2 versions. One with all detail - and one with just the building envelope shape on one layer. The timing is very tight - we need the model within the next 2 days. Please apply if you have worked to very tight deadlines before and on similar projects. We already have a 3d max model of the building that may be of use, but has not been accurately modelled. Please give an estimate of your hours to complete this and an hourly rate. Enclosed is a picture showing a project with a similar level of detail. The new one is six storeys, The project will start immediately. Thank you for your consideration. Ellen, Office Manager.