I am in the Seattle area too. I don't intend on maxing out my 3. But there are probably a few options that you can add that will put you in line in front of most of the people. Honestly...AWD will be the most valuable option you can add in my opinion. (And Elon said it will be less than $5K) It will add a little bit more range and performance.
The only options I intend on getting right now are AWD, Autopilot, and Red Paint. I think this will come in at around $42K total. The bigger battery is at the top of my "wants" list though. But will probably be too expensive to get past the wife.