Build an Online Store

I'm looking for a Big Commerce and Shopping Cart upload export. Please read the description carefully as the it DOES NOT merely involve populating data into Big Commerce spreadsheet and upload.I run an ecommerce website that I'm looking to add new products to. The store runs on Big Commerce platform. I have the list of products from the supplier /manufacturer in specific excel format. The product range will include but is not restricted to leather handbags, non leather handbags, womens clothing etc. Links to the images are available and in over 90% of the cases are provided by SKU. There will be a need to create options within the Big Commerce for particular SKU to enable list same product with multiple colors etc (basically options). I foresee the following actions - a) Receive the raw product file from me b) Map the products to product categories c) Research and identify "exact match keywords" for the products c) For each product - identify and update Meta Description, Meta keywords and Page title (for all products. Could run up to 300-500 products) d) For each product rewrite SEO optimized product descriptions (with the relevant keywords) with a spin off the manufacturer description (We have the flexibility to upload with "as-is" description and then do rewrite product descriptions later too in batches) e) Format Big Commerce upload file with the relevant information including google shopping categories etc and upload f) Validate results once uploaded If you are a big commerce and an ecommerce product upload specialist, I'm sure you would know the steps I'm missing. So please feel free to chime in. There shall be No Upfront Payments made. Only 2 milestones. \ Milestone 01 - 50% payment when 50% of the products are successfully uploaded. Milestone 02 - Full payment, project closure and feedback when 100% work is completed, tested and reviewed Please review the information above and respond with credentials. Please note that I'm looking for experts and not novices. You should be able to showcase prior projects in freelancer.com with positive feedback for similar product upload work for big commerce. Your bid will need to necessarily provide overall pricing for the entire initiative + thoughts on how you wish to handle the project + specific time frame.