It sounds like OP has no desire to be a lawyer. As a society we view UG as intrinsically valuable, but the difference in pay with a degree vs. without is much higher over a lifetime than law degree (from bottom of the class) to without. I'm not suggesting that everyone in the bottom of the class drop out. I am suggesting that OP, who doesn't really want to be a lawyer/be in law school/just went for having nothing else to do, should seriously consider dropping out.
Assuming OP has no undergrad debt (which could be a big assumption), $150k in law school loan debt would require about $200k in total repayments over 10 years. OP's monthly payment will be $1726 over 10 years, and the financial aid calculator suggests that he needs an annual salary of $200k to pay it back while living comfortably. If OP uses 15% of salary to pay it back, OP still needs $150k salary to live comfortably.
Add in the foregone income of between $40-60k per year for 2.5 more years -- $100k-150k. Law school will thus cost the OP $300-350k, and OP will need a biglaw salary to pay back the loans while living comfortably. This doesn't even factor in the opportunity for OP being 2.5 years higher on the job rung ladder by dropping out and getting a job now. If OP drops out now, OP could be in a much better financial position.
Maybe the sacrifices are worth it if you really want to be a lawyer, but if you don't, then you should damn sure think twice about graduating at the bottom of the class and hoping to make $150k starting.
I'll have to disagree with you on a few points.
First, if you take out $150,000 in federal loans (Stafford and Grad Plus) at a rate of $50,000 per year (so your actual debt at graduation is more than $150k), your monthly payments will be around $2,000 on a 10-year re-payment term.
Second, most lenders offer re-payment terms of up to 20 years for large debts, allowing for monthly payments of around $1,400.
Third, even at $2,000/mo, you don't need $200k per year to live comfortably. If you make $200,000 per year, you will take home about $120-130k after taxes (federal income, state income, social security, medicare, unemployment) without any deductions, exemptions, or credits. That comes out to $8k to $10k per MONTH, after making your loan payments. You don't need $8k to $10k per month to live "comfortably," by any reasonable interpretation of the word.
[I'm not sure which "financial aid calculator" you used, but it's always a good idea to check the numbers for yourself before posting them. Not to do so is like copying-and-pasting a summer associate's work product into a motion without checking the research.]
Fourth, if the OP takes a job working for the government (at any level) or for a qualified non-profit organization, the OP can take advantage of the College Cost Reduction and Access Act of 1997. At an adjusted gross income of $50,000, monthly loan payments for that $150k debt would only be $430/month, and the entire balance of the loan (principal + interest) will be canceled after 10 years.