Personally I dislike the idea of having another language on the back of the cards. I'm all for English Only in my classroom. I'd suggest instead that you can print them (or paste pictures) on slightly thicker paper and then laminate them. This makes them longer lasting of course.
As for shuffling, well you can try the traditional way but often I'll pour them into a cardboard box and mix them around a bit before handing them out (or having the students come and pick with their eyes shut).
Flashcards - TEFL World Wiki