So I did this the other day, like the op said the hardest are the lower front most ones. The driver side was pretty easy. But the passanger side is right up against the shock tower. You can't see it at all from any normal spots. What worked for me was to turn the wheel right, and bassicly put your head in the wheel well while on your knees. At that point with somebody holding a light you can actually see the plug. I used a short spark plug socket with short maybe two inch socket with a small head ratchet, and I was able to get it.
That was the only one I couldnt get my troque wrench on. But 104 in pounds. Which is about 12nm is not very much and I found that once all my other plugs where tight that they where very close to this amount by had and some didn't even move for this reading.