If they are going to give you $300 for that car I say go for it. That car only weighs 2700 lbs, that means if you get $10 per hundred for it you will get about $270 in scrap for it. If you take the aluminum, copper and brass, you may get maybe another $75 to $100 but you will be taking weight off of the car, so you may get $200 for the car in scrap, another $100 in aluminum, copper and such. So your not making any extra. In fact you will be loosing money, your time invested, your gas burned, your consumable tools ( blades, gasses, ect.). My original advise stands, Sell it whole and don't worry about stripping it down.
Now that I got that off my chest, you do what you want to do. You need to read this forum more, all the questions you have been asking has been answered numerous times in the past. The experienced scrappers on here have been giving you the advise on just selling it whole and you insist to tear it apart.
Nothing beats experience, so if you insist on taking it apart, do it and learn from it. As for us telling you how much you will be making from stuff, its hard to tell but that's where the experience comes in, just do it and see what happens. After you do one, you will know what to expect from the next. The more you do the better you get and the more you will know, aka experience.
Sorry if this rubs anybody the wrong way, its getting late and I'm getting tired.