Speaking from experience here. I've got an '01 RT/10 that I bought salvage and did the repairs myself.
Ensure you can register and insure in your state. My biggest hassle with my car wasn't getting it fixed, but going through the legal obstacle course to get it on the road legally.
Big thing to consider is whether the repairs were done right. If that's true, ask yourself if you'll have it for a long time, because resale will be nil(ish), though the $22K price is pretty good! For that price, get it inspected and if its good, drive the hell out of it with no regrets. The thing that I love most about my car is that I can drive without being scared of rock chips or door dings. Not that I go out of my way looking for them, mind you, but when I get a little nick in the paint, its all good. I know that the value hasn't been lessened. Its a high-end fun car for me.
I've had a few small things pop up, but even non-salvage cars do. Its funny... when you get something go wrong with your car, the naysayers will say, "Yup, told you so!", but when something goes wrong with theirs, they're pretty quiet.
I'd say, "Go for it". Get it inspected properly and nab that deal!