I got you pm, tan - sorry I took so long to reply.
I had a gen 1 mark for 2 years - the 97 is the first year of the gen 2. The LSC model will have hid lights, which is great. Common trouble areas on that model: The blend door for the heater, which is a cheap part but a bitch to get at, and the door handles can sometimes break, although I never had problems with mine. In fact, I never had any major problems with my car, all I did was replace bushings and wear parts like the alternator and the air compressor (150 bucks). Don't let people scare you about the air suspension - it can be weird at times, but the parts are not expensive, and there is a very good aftermarket - American Air Suspension is a great company, ask for Eddie, the owner . He is willing to talk you through any problems you might have on the phone. A very very good site with people who will answer all your questions is
http://www.lincolnsvscadillac.com
As for using it as a grocery getter - well, your mileage in the city will not be so good. Look for anywhere between 12 and 15 mpg. However, on the highway, you will see 30.
Personally, I loved the car, and wish I still had it, but shit happens. Good luck with your purchase - what colour is it?