Here's another thing to consider. I don't know if you have ever done any exhaust system work, but unless the system is near new, it's going to be a real pain to get the pieces apart without destroying them, due to rust for one, but also because the pieces are either clamped down really tight, or welded together, in which case they will need to be cut apart.
It's not a fun job to say the least. You're upside down under the car with dirt and rust raining down on you every time you touch something.
That's one reason why the exhaust shops are still doing a good business.
Rick