I really like this as it is. Smaller aperture? I know I'm having an eye test on Monday, but it looks good to me. I like the out of focus distant water. And sunshine ...do you crave burned out highlights? Check the range of tones in Silver Efex or LR .... a full set I think.
@yrhenwr :) the breaks on the waves are not quite as sharp as i would have liked them to be... this would have required a smaller aperture and a faster shutter speed - which would have required more light :)