Bad News: No underrepresented statuses, and so far I'm stuck at sticker price ... and sticker shock

Financial Situation: My father is a lawyer about to enter retirement, and he will not be contributing since he funded my undergraduate education. I've been working at a tech consulting firm for just over a year and I will have saved $20k by the time I start law school. It's a drop in the bucket, but hopefully it will help!
Debt Projections: At sticker price, I'd be looking at around $250k for all three years. After the three years of education + interest, I'm guessing my debt would be something like $270k-280k, growing by about 21k per year, and rising if the principal grows.
Questions:
1. What factors would sway your decision to attend UVA/Duke/Penn Law at sticker price?
2. If I'm making around $90k-110k post-tax, can I reasonably expect to pay interest and put a meaningful dent in the principal?
3. Should my annual salary increase enough over time to significantly pare down this debt?
4. How are other people successfully financing this monster debt load? Is this debt load insane?