If you are really parking it on the street, esp. in the City, you'll be parallel parking, in which case you don't really have to worry about door dings, unless someone double parks and a passenger gets out. I have a bit of a thing about parking - I had to adjust my parking spot at work when I moved offices so I could still see my car in the lot. I also cover the Viper whenever I take it to work (since the lot is uncovered).
My tips would be:
1) get a good cover - I got a good one at BigSky Car Covers (ad in the back of Road and Track or on the web). You'll likely want a really heavy duty one if you'll being using it in lieu of a garage - I got a lighter one mainly for UV so I could fold it neatly and put it in the car.
2) get a lock for your cover - run a cable lock under the car to secure the cover - if not your asking for someone to take the cover, even if you write your license number all over it.
3) get a better than stock alarm - I really liked the Clifford I put on my old Vette - the motion sensor was easily programmed, and it had the right sensitivity.
4) think about adding a different starting mechanism - I put a push starter under the dash on one of my cars that is pretty inconspicuous. This won't thwart the professional thief, but will likely deter the ******* looking to punch your ignition and split.
5) get a real garage, ASAP.
Good luck, and I like your attitude - the cars are meant to be driven - I put 5000 miles on mine in a year, but once the odometer clicks past 20,000, I think I'll be much more likely to drive it - alot.