Here is my old level 27 road. It doesn't allow the "perfect" but I still like it because of how I collect the diamonds with the green blobs
and if you notice all the green blobs are killed symmetrically (like the song says : blood on the dance floor)
Since my "perfect" road is the same as yours John, no need to post.
Edit: Finally I have decided to post my level 27 as we have a difference of 5 seconds