^^He's right that paint is not bad at all!

If you want to try this by hand here is what you do...

The chauky paint is probably some oxidation, try a local auto store and pick up Meguiars Color X. Its a great way to remove oxidation and bring the color back. Its not a color wax the name is a misnomer. Its just a really good paint cleaner thats highly underated and its not a lot of work if you apply it with a terry cloth applicator with a little pressure. You'll be amazed at the oxidation that ends up on the pads. Top it of with your favorite wax.

The scratches is another matter. Meguiars Scratch X can do it but you better have arms like Popeye, it will take you a few hours per panel. Best to get a PC but I have seen car pictures of people who have done it by hand and I was amazed. Also the area is small so hand may be better.

I would try these products first because they are cheap and effective. Do this before you go with the online stuff.