A print and design website with database

I am a printing company based in the UK offering good quality print and design to customers around the globe. I need to start to promote more online and for this i need to have a good functioning website what iam thinking is based like vistaprint but not as complicated. i need to:- captcha customers time/money for customers to be able to reorder at a click of a button for customers to have there own members area possible to be able to produce there own designs back end:- for me to update prices easy add special offers and discounts quickly (with printing there are alot of elements other than size and quantity for example paper weights paper size finishing-ie gloss satin having folds and lots more take alook at some other printing sites for an idea more backend to be able to keep track of order and what process its in ( maybe have this reflect in customers area if there is any more suggestions please contact me to explain i need something as soon as humanly possible payment terms to be discussed