some nice ideas, but you definetly need to change the bumpers. I'd say a good compromise for a bodykit would be the 12 bore kit:
http://cgi.ebay.co.uk/FORD-FIESTA-BO...QQcmdZViewItem

This with the st orange paint, some nice rims, and maybe a subtle spoiler like off the zetec-s could look quite good if done right.
Also instead of spending a fair bit on the lambo doors, you could save the money and spend it on a subtle ice install and a make the interior nice with either a leather re-trim or an rs turbo interior.

Just a few constructive ideas for you to think about, subtle touches are often alot more effective