(2) looks awfully hard, unless we can find a powerful IA technique that also, say, gives you a 10% chance of cancer.

Possible candidate.

Edit: if the utility function of EAs working on FAI is really such that they would take a 10% chance of cancer for powerful IA, is it safe to assume that they are taking advantage of the moderate IA that's reportedly possible with existing nootropics, apparently without significant side effects? (Though, on that thread in particular, there's probably a bit of a selection effect where folks who use nootropics long-term are the ones who respond well to them.)