Why not spend some time programming or tutoring math? If you work at Google for a year you can then live off the proceeds for several years in Bali or the like. A moderate amount of tutoring work could pay the rent.

If I ever go to work at Google it won't be to live off the proceeds afterwards, it will be because it's relevant to artificial intelligence.

Supposing you can work at Google, why not? Beggaring yourself looks unlikely to maximize total productivity over the next few years, which seems like the timescale that counts.