lose the on-camera flash. use a tripod and take it at dark, or take it in the daytime. either one would look good, because that is definitely a good photo spot. try scooting to the right a bit and aiming left. It would eliminate the handrail from the picture and it would seem more natural.
i totally agree you've found a great spot and i would try some of the suggestions laid out to you. this would look awesome in an existing light shot; bracket your exposures, see what ya get and SHARE!!! :thumbup: