Honestly, just keep it stock. Nothing wrong with having a nice, clean, peppy car that isn't obnoxious.
My other car is similar to yours; good handling, practical, room, good looks, but not fast. I just did visual mods (HID, stereo, drop, wheels) and couldn't be happier. The power mods, as with your car, would be pointless and be embarrassing to drive with (loud but very slow).
I suggest some nice 19" wheels, drop, etc.