Welcome to Dodge, and the Doge forum! The Stratus section has been dead for a while though....
Anyways, I have the 2.4L Stratus, the SXT. Though mine is a 2006, with 196,000 miles on it. They're really nice cars dude (and yes, the 2.7 did have bad oil sludge problems, though that tends to happen when people didn't change their oil for a long time, also using a longer oil filter will help prevent sludge as well).
Before my Stratus, I had an Audi, A6 Quattro 4.2L (V8), and a BMW 330xi before that. And I couldn't be f***ing happier. These cars have been known to last up to 400,000 miles, and that's not really even a rare occurrence.
But... few warnings for you to think about before you make up your mind.
1. 60,000 miles for a 2002 vehicle is very very low. I know most people like low mileage cars, but understand that the lower miles, the longer the car has been sitting. Cars don't like to sit.
2. If the owner left the car outside, I'm willing to bet the car has a fair amount of rust on it. You should check underneath the car and make sure the frame isn't in bad condition.
3. The coolant and tranny leak isn't the end of the world. How bad is the coolant leak though?
4. Probably the most important thing: these cars have timing belts. Unlike most timing belts though, Chrysler suggests replacing this one every 80,000 miles unlike the usual 100,000 miles. So keep that in mind, as that belt will have to be changed sometime in the next two years.
Check to see if you have a non-interference engine though. If you do, and your timing belt breaks while you're driving, you won't need to worry about the engine being done for.
Anyways, I hope that helps! Sorry it's so long! I just love to educate people about these simplistic, yet awesome cars. They're really fun to work on!