This is the wand of Rufus Scrimgeour, the Minister for Magic later in the Harry Potter series. This is my own model version of the wand, broken into two pieces for easy printing as the wand is very long.
The handle piece needs the high resolution and supports due to the center pieces fine and small design features, the neck doesn't need as high a resolution if you don't want it.
If you plan on being crazy with the wand, increase the infill. It'd be sad if you broke the wand.
To smoothen the print, I like to normally sand it down, and then use acetone vapor on the ABS plastic to smoothen it to perfection. Notice I said acetone VAPOR though, as brushing acetone onto the ABS plastic can be very ugly, since the brush will leave brush strokes on the model (naturally).
Alternatively, if you don't want to risk playing with highly volatile vapors, you can use various spray paint primers which fill in small holes and grooves, then paint over top of this. Either way, be prepared to do some sanding!
To paint the wand, paint the center piece a silver-like color (glossy/shiny if you acetoned the model, it looks great like that!). Paint the rest of the model to make it look like dark polished wood. Spray paint is a good idea, just put blue painters tape around the "wooden" part of the wand when painting the center piece, and vice versa.