Leaning no, for four reasons:
1) 150k debt, IBR/PAYE/LRAP/PSLF or not, is a life-changing-ly large amount of money. I'm not writing off LRAP -- personally, I'm EDing at NYU with a try-or-die attitude towards a fairly specific PSLF-eligible career goal.
2) I think it's really, really fair to assume that OP will not end up in either PI or academia. By the time all OP's loans are paid off (let's assume 70k COA - 20k need aid = 50k a year), he'll either have paid 230k's worth of loans (at 2k a month), or else has to take a very significant take-home-pay cut in order to pay off loans faster. No matter how you look at it, that's still a lot of money, even on the likely-biglaw salary.
3) OP seems to be toying around with non-PSLF/LRAP/etc. eligible items, like politics or academia. It's entirely possible he actually has fewer options coming from Stanford due to the debt.
4) If OP is okay with/gunning for "PI" and really doesn't have any notion of what that ultimately looks like, is he really going to be devastated when he ends up with a less-prestigious PI gig than he might have otherwise had? Chances are, probably not.
I'm not saying Stanford is a bad choice, but that just compared to NYU, Penn, or UVA for close to free, it's probably not the right choice for OP.