Ok, the repair times for your damage as you proposed are as follows:
Total repair time of 24.6 decimal hours presuming that neither wing or door was the correct colour and required prep/paint.
This consists of the following:
12 decimal hours to remove, refit and paint NS front wing and NS front door. 12.6 decimal hours to repaint NS rear door and NS wing.
However, if you replace the front wing and BOTH doors with Diamond Black items, then paint just the rear wing then the total repair time would be reduced to 14.1 decimal hours.
This consists of the following:
6.7 decimal hours to remove and refit the NS front wing, NS front door and NS rear door. 7.4 decimal hours to repaint NS rear wing.
In short, assuming an insurance body shop labour rate of £25+vat, so £30 inc per hour...
Option 1. 24.6 hours @ £25 gives a total cost of £615 + vat or £738 inc.
Option 2. 14.1 hours @ £25 gives a total of £352.50 + vat or £423 inc.
Obviously these are the Thatcham TTS times, not a fixed amount, and don't include the cost of parts or materials.
It should however allow you to build a reasoned estimate if you can price the wing/doors and add £75 for paint/materials.
Hth
Edit to add following image...
This is where the timings came from