CS Cart modifications

CS Cart modifications, preferably by someone with actual cs-cart experience I am trying to tweak CS Cart to provide both a sales cart and a tiered subscription based directory service and have used version 1.3.4 as a base for proof of concept. The directories are effectively Category and SubCategory levels. Due to time constraints, I need some one to a) Set up version 1.3.5. and import the existing data. b) Provide additional functionality to help automate entry of data to the tiered directory service. Essentially the subscriber is allowed to provide the level of details required, and the administrator can then elect to create a directory entry, effectively using the data provided to create a product in the correct category level, as well as the relevant secondary category and product features using a standard template to provide a consistant look and feel. ( This may be through an extension to the user selected subscription product options purchased or maybe an interactive extension to the collection of member details to include extra fields relevant to the tier they have subscribed to, or any viable alternate method you might like to suggest, this is where your KNOWLEDGE & EXPERIENCE comes in .) Frontend : Increase the size of the input text areas, Add the facility to allow a customer to upload multiple images, Facilitate the entry of details relevant to the tier the subscriber wants to join. Backend : Allow the Administrator to create a directory entry as described at the start of this section. To help clarify the subscriber types would be as follows : Standard - Name, Address, Phone, +Bronze Membership Detailed - as previous plus Mobile, Fax, email, web, Short Desc of service, 1 image, +Silver Membership Feature - as previous plus Detailed Desc of service, Fleet Details, 4 images and personal (Sub category) listing, +Gold Membership => (10% Disc. on extra Ads) Special - as previous plus 5 changable Product Ads for Year (in their own sub category and alternate category) +Platinum Membership => (20% Disc. on extra Ads) (NB : It would be ideal if the solution delivered could provide this level of subscriber with the ability to maintain their sub set of 5 or possibly more products) c) Similar functionality to (b) but to facilate the creation of user defined advert for items for sale. I am looking for an establised and sucessful developer to build up a relationship as there will be a requirement for additional enhancements in the near future.