I'm not sure, there are jobs (at least in SV) that while not at that pay level, are probably between your current pay and $200k, that would allow you to be around very bright potential co-founders, and do not involve a non-zero risk of being killed.  But, as metra said, without knowing your current salary, it's hard to give firm advice one way or the other.  I also put considerable emphasis on the caliber of the other developers I work with.