Hi,
I'm Sherif a Flash developer with 7 years experience building web applications and located in London, here's a link to my portfolio http://sherif.studio.anti-theatre.com.
I've had a look at your requirements and current application and have a couple of questions:
When the email is sent to a specified address to receive a quote, I assume the email will contain the mat design? Would that be an image or is there a text representation you used to use?
Do you have the current Flash source files?
I think this would be a straight forward job and I have no worries regarding implementing the application on multiple storefronts. In the email being sent, we can pass the name of the storefront to be included in the email. How many storefronts are there?
In terms of milestones, how would you like it to go? Obviously my intentions are to deliver the whole project to a high standard, but I'll be happy to break it up into milestones if you wish.
Please let me know if you have any question.
Thanks for your time.
Regards,
Sherif