I will recommend you fix the tail light. You can try to buy it online used, which will be a lot cheaper than dealers. Or you can buy it from junkyard since your car is a common one.
You said the bumper is cracked (?) How bad the crack is? Is it big?
As for the rest of the dents, are they just dents? Or the paint already came off? If the dents are just small, then I won't recommend you to fix them since it is normal to have small dents. But if they are big, then you should fix them first before you sell it. Of course, try to find a good store to make sure the color match.