[Davie Boy]

I own a '90 964 and, until recently, would drive it to work 2 or 3 times a week. My commute is just 3 miles (10 minutes) via streets only, but the engine always reaches operating tempurature regardless of the time of the year. Yeah, I live in So Cal... but I think you'll be fine. Besides, like you said, you always have the weekends.