513792 Magento Expert Needed

1) I have a website that has a wide variety of products that need to be added to a Magento catalog. I would like someone who is very experienced with Magento to analyzing all of the products that need to be added then: a) Set up all of the attribute sets. b) Adding sample products to each of the categories. c) Provided a sample import spreadsheet so that all additional products can be entered easily. This is a catalog with over 4000 products and a very wide variety, from 20+ different suppliers including area rugs with different sizes/colors and therefor prices to dining room tables, light switches, lighting etc 2) I want customers to know their shipping costs when checking out. Here's the problem, a customer can be in Chicago, and they can order two different products from two different suppliers. So one product is shipped from New York City and the other from Los Angeles. One supplier uses FedEx the other uses DHL. We need to be able to caculate shipping costs for this. Some products may have handling fees as they are heavy items, some times might have flat shipping rates, others might be based on weight. We need a way to handle all of this in the checkout procedure. I want someone who is familiar with what Magento is capable of handling out of the box, what current extensions are available to match these needs and someone who is capable of developing a custom extension to handle any short comings. 3) I want to make sure the site is loading as quick as possible and optimized to it's highest ability (in terms of speed). I am aware of the Fooman Speedster extension, what I need is someone who knows further techniques of making sure a site with a lot of products and a lot of traffic can load quickly and efficiently. You need to be available via skype. In order for me to consider your application you must discuss the three points above, please tell me what you would recommend we do, what extensions you think can work, etc. Please make the subject line cheese, and do not send me a list of a bunch of sites you've worked on. I don't care unless its directly relevant to what is described above.