Advanced Zen Cart Programming Help

ONLY THOSE WITH ADVANCED ZENCART SKILLS NEED APPLY. I have a site being built that needs some advanced features that I need assistance with. This is a TIME SENSITIVE project and this will need to be completed within 3 business days upon acceptance of the project. NO EXCUSES! Here is an outline of what is required: 1) Client sells to US and Canada they have different pricing for each for the products as well as shipping. There will be new fields in the database that have information that is country specific. The site needs to be coded in a way that the IP will determine whether they view the US version or Canadian version. So the US version will show one set of returns from the database and if they have a Candian IP, the results will return the Canadian specific fields instead. (there will also be a flag that they can click to change the options) 2) Addition of several fields in the database and and the product files including: - Canadian Product Price box - US Product Price Box (we can just change the name of the existing price field) - Short description box (this will be info that will be displayed on the category page as a category description) - Weight multiplier (need to find out what this means exactly) - GTA Shipping (Toronto shipping flat rate) - Canadian Shipping (Flat rate rest of Canada) - US Shipping (Flat Rate) - Estimated Delivery - Specific (name will be provided at a later date) Product (yes or no, if they choose yes a surcharge needs to be added to the order at checkout) - California Taxed Product (same as above) - Delivery Options (yes or no) The final part will be the assistance in taking the existing store database (not in Zencart) and making it Zencart compatible for easier uploading. There are about 1,000 products. Again, please only apply if advanced Zencart is in your experience - SAMPLE websites will be required to be considered.....