Yes, I love the redundancy of English. Language makes a playground of our minds. And yes, "picturing" is another way of saying "imagining", but to me and my mind it carries more of a connotation of visualization. Imagining may have its root in "imaging", but encompasses more imho, describing the entire Reality Construction Kit.

"Unforced choice" is an interesting phrase. Perhaps another discussion, another time. End self-expression.