Detailing a SketchUp Model of an Existing Gothic Revival Building

Information for the business: We are an architecture and planning firm
Industry: Art and Design
Design details: The job would be to add detailing to a rough SketchUp model of an existing Gothic Revival building. Attached are some images to show:

1) The basic, undetailed model we want to be given accurate details

2) A sample building in the file that has the right amount of detail that we would expect from a person completing the job. Accurate roofs are the priority, followed by detail that give the building areas its characteristics, followed by roof details, followed by windows

An interested worker will be given more information on the project after making an offer. Essential images such as photos of the existing building, and the SketchUp file to be edited, can only be released after contact is made with whoever takes the offer.

We do not expect a perfect, to-scale model - we'd rather a model that appears to be accurate to the existing building.

We would expect to see how much work towards this that you can produce in a day preferably, maybe in two days, and expect to spend £100 - £200.
Target audience: People proficient in SketchUp
Ideas for the visual style: similar to the second attached image - this consistency across the building
Things to avoid: going too detailed in areas, to the expense of a consistent detail across the building
Extra notes: