Edible parts: Leaves are edible (although not that great tasting). Do not consume large quantities.
I don't know about the wild geranium?
I rarely have good luck transplanting a wild flower when it's blooming...they really look happy in that spot. Maybe try digging a very large clump including anything that's nearby so the roots aren't disturbed much?
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
The Greenhouse of the Future ebook by Francis Gendron