I like the idea of the spires, though, but they're too large for the building. Maybe make them a little smaller. One of my favorite buildings around resembles this one somewhat. Indianapolis' Chase Bank Tower which is 700 feet tall to the roof with 48 floors, but has twin spires that take the height to 811 feet. That building is really nice looking because of it's proportions.
http://www.emporis.com/en/wm/bu/?id=...napolis-in-usa