When I had my z cars, I drove them as my DD every day for about 6 years. If your AC works, and your heat works, they are not bad daily drivers. I would take yearly trips to/from school of about 1000 miles. I had several fairly decent accidents, and came through them ok. I ended up finding the clutch effort pretty annoying when I moved to LA and dealing with traffic. But in a semi-rural environment, a Z is a great DD.
I will chime in about the exhaust fumes.
Me and a bunch of my friends all had Zs, and we all had problems with the fumes. Some more than others, depending on the tune of the car, how well their tail-lights were sealed, etc. But after some testing, and observations, we also came to the conclusion that there was a low-pressure area at the back of the car. A bubble of swirling turbulence, that kept the exhaust stuck to the back of the car. So there isn't a ton you can do about it, except seal everything the best you can, and maybe try that experiment of angling your tailpipe out to the side of the car somehow...