I think target sights would be out of place. Mine shoots to point of aim, after I drifted the rear sight a bit.
Here are two things that can be done to improve the sight picture:
With a square needle file, cut the rear notch square. This will give you a better look at the front sight and the same sight picture as a target sight.
If you want a bright fluorescent front sight, paint the rear of it with bright white enamel. When dry, paint it with fluorescent red model paint. The red will not be bright unless it is on the white paint.