Virtuemart is probably one of the biggest shopping carts available for Joomla. It's one of the most comprehensive to my knowledge and I believe that it will accept payment gateway from different banks. How easy that is to setup is a subjective question... it would depend on your level of comfort with those things.
In my experience Virtuemart is very full figured, secure and is a great ecommerce platform. Since they've released it for 1.7 it should in theory work with 2.5 (the LTS release). Their support has always been highly reviewed and the user community is large as well.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.