Wordpress shopping site with Tally Integration

I want a wordpress site that sells animal feeds. As of now there are 6 to 10 products. We will be providing a detailed description (Pictorically) of each product.. Like How to feed, ingredints of the product, benefits of the product etc. I want tally integration. The sale details needs to get updated in Tally.. preferably automatically. The shipping charges gets displayed based on the pincode of the customer. If the pincode is not available... the system has to automatically select the nearest pincode and give as a sugession to the customer.
The site will have an attractive homepage, an about us page and product page