Basic Modifications, bug fixing + beta testing needed for existingB2B MArketplace/Alibaba script

Hi I recently installed a Albiba clone script of B2B marktetplace. The scripts works ok, but there is need for modicatication and testing 1)I need need some minor layout changes done 2)Paypal account be coded into script 3)There are some issues with the membership options, I want a free membership option but at the moment , after registration a screen appears saying you have to choose for a paid option this must be changed 4)I want to add the option to upload a pdf brochure at each company profile 5) I need advise on how to upload most easy way a large batch of profiles 5) Several palce I want some text changed and some links added ( for exampke a "more about us link" etc 6) Thourough testing is neede of all features, and bugs must be fixed The idea is that the script is ready for us after your work I want bids from people who knwo this script well, and there are several of you at GAF The work metioned below is not huge I do not want a total rewrite, just finie tuning of what is there