Need to intergrate shopping cart with merchant solutions approved gateways/shoppiing cart

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Help! I need to immediately get a site up and I really want to do it in concrete5 NOT drupal, but I do not want to use pay pal which isn't supported fully by merchant solutions my clients online service... please they approve the following:
Prestashop, CS cart, oscommerce, open cart, cube cart, zen cart.

It has to be in one site. He has several staff who will need to manage this and doesn't want to have to hop between cms plateforms to make changes. How can I do this? I also have 3 other sites coming up that I need to use the same system with. Also, it would be best if the cart interfaced with quickbooks. Ubercart does, could I use this with concrete5? Any help? Basically I want to beable to have the data from the online orders be entered into predetermined fields at the end of the day, so he can track online sales.. Also.. He wants to have two area in the shopping cart where wholesalers can sign in and public can, and have member login... anyone wanna job?

spottjake