Lowering and wheels?

I have a 1980 caprice that i use in the summer, kinda cruising mobile.I have just ordered a lower spring kit for it (edelbrock) which lowers it 1" rear and 1.2" front, I'm thinking about getting some wheels for it but not sure what size to get? 17's would look ok i guess. What size tires would i need to run to keep my speedo right? Thanks people

What size tires are on it now? The stock wheels and tires should have been either 215/75-15 or 225/70-15. Either of those would have resulted in about 731 revs per mile. A 245/55-17 or 265/50-174 would be very close to that.