That looks very much like my recipe, if you want to check out my directions. It's posted under my avatar in the "recipes" pulldown.
Using only the yellow petals IS a pain, but it's important because the green "holder" of the petals is bitter.
Dandelion wine drops lees for a very long time- I'd say more than three rackings will be required!
Broken Leg Brewery
Giving beer a leg to stand on since 2006