Out in Southern California (high but not as high cost of living), we found that angels were OK with salaries of around $60k / year for the founders.

If this is your startup (so you're a founder, not first hire...), then figure out how much money you can live on, altering your standard of living as much as you feel comfortable doing. I wouldn't expect to save much money off of your salary, but it should keep you floated. Remember, if you take too high of a salary, it's possible you'll run out of money -- so take as little as possible, for the maximum chances of success.