I wouldn't take the job. There is no monetary benefit that is worth me violating my own ethical sensibilities, period. If I think a company is evil, then helping them in any way is me doing evil. From my perspective, it would be better to live in poverty.

Plus, this position will not be the only opportunity that will come down the line.

I am not, however, recommending that you do or don't do anything in particular. You just asked what we would do, and that's what I would do (indeed, what I have done).