Nice work. Looks like you got a very good exposure in difficult lighting; you kept the feather highlights under control in the harsh sunlight. I think it's a good composition too. Seems like the D90 would still be a decent rig.
One thing I'd consider trying is cloning out the brightest (or maybe all) bokeh highlights on the water. Just to compare. In a way, they are sharp compared to the water and so reduce the feel of depth created by your chosen depth of field.
Is that St Petersburg? Reminds me of views across the bay to Tampa from the seawall in downtown.