I recently purchased another car to use as a daily driver as i have put 17K miles on the Z in less than a year. My question is: anything specific I need to do with the Z if it's only going to be driven once or twice a week?
You shouldn't have to do anything special. During winter it's sometimes 2-3 weeks between rides and that hasn't caused a problem. Tires tend to get flat spots after sitting for a few days, but these disappear pretty quickly once you're driving. If it's going to sit for more than 2-3 weeks, you might want to get a battery-tender, or be prepared to put a charger on it periodically.