If its going to be a beater car, get a macco paint job, I've had a few friends get the cheaper single stage jobs and they turned out pretty decent. Its not show quality but it will look better than 99% of the 240s out there. And it will last 2-4 years if you actually keep up with the maintenance.

If its a really nice street car that you plan on spending tons of money and going to show to win throphies and stuff then spend the big money and get a real paint job.

I personally wouldnt spend to much on it because eventually something will go wrong and some part of the car will be knicked or dented and new new panels and paint.