I like 1 and 4. I wonder how 1 would look if the sun was about 1/2 way bellow the horizon. The last one has great look I would also agree that I would like to see more DOF as well.
#1 is my favorite. As cpd23 mentioned, stay a little longer and try it when the sun gets a bit lower...kissing the treeline, half-way gone and then below the horizon. The wharf acts as the main subject for me...maybe a step or so to your left.