I need a wordpress plugin written for distance calculation for a taxi form.

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I want a wordpress plugin for a UK taxi company. I would the plugin to be able to do the following things:

i) Calculate distance via UK postcode entry by the site visitor (probably using google maps in some shape or form) and a price displayed for quotation purposes.
ii) If the quotation price is acceptable, autofill into an enquiry form
iii) I need to be able to enter prices per unit of distance (km or miles) at various times of the day (For example, a tariff from 8am to 8pm and a tariff from 8pm to 8 am, or special rates for particular days - christmas/new year.
iv) I would like the option of multiple pick up points. ( A "via" function if someone wants to pick up someone else along the way.)
v) A text box for enquiry details.
vi) The ability to add extra text boxes where necessary (ie. To use the plugin on a airport transfer page where extra information is necessary (luggage/disabled access).

The WP google distance calculator is the closest I can find, but it isn't flexible enough. Can anyone create this sort of plugin?

Skills required:
PHP, Software Architecture, Software Testing
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