Build an Online Store - woo commerce support

Hi, I have a business creating web and video for various clients. I require a woo commerce expert to support and walk me through setting up a site with very specific needs. I know that it can be done in woo commerce. I would like to do it with off the shelf plug ins and the minimum of PHP or CSS editing as possible. The end product must be very easy for my client to administer. The job: Woo Commerce site - probably going to be 20,000 products added eventually. The end users are from different sectors and need to log in to the site. Once logged in they are only shown a sub-set of products based upon their sector and login credentials. The prices shown to the user are defined by their login status. The user selects their products and a quote is generated and sent to the shop administrator. The products have additional features so will need extra tabs in the product page. IE Various shipping classes, delivery options, installation options, pdf downloads, video tutorials etc My client will need to be able to easily add products and pricing for different sectors. I need someone to be able to set this up for me (i can provide a sample spreadsheet for 100 products). I have the woo commerce shop in place and am very familiar with the system. I am hoping that someone out there can take the load off me in this instance as i have other work to contend with. Looking forward to hearing from you.