If you get a 170 you should apply to some of the lower T14, not because of their rank, but because you shouldn't be thinking you are limited because of your GPA from 10 years ago. There are several people on here who had LSATs over 170 and GPAs in the 2.0s and low 3.0s who got into places like Michigan and G'Town. An excellent LSAT is likely to score some sort of financial aid anywhere, because, unfortunately, that's all most schools care about.
Believe me, I've thought about that. But remember, I'm tied to the Boston area because of my house and my family. Fortunately, between BC, BU, and NEU, there are plenty of good choices around here. But committing to a full time program would be very difficult. I'd have to work part time while in school and that wouldn't be enough to support my family, so I'd be looking at loans of tuition and living expenses of around $150,000. That's a lot of money to commit, expecially considering that if I'm working part time and being a father and husband (that's a full time job any way you cut it), I might find it difficult to remain cometitive with my peers.
It's all moot until I actually come up with a real LSAT score anyway, but becoming a full time student is daunting.