It seems unlikely to me that we'd acquire the ability to revive a brain from death before the state of medical technology advances sufficiently to repair nerve

It seems unlikely to me that we'd acquire the ability to revive a brain from death before the state of medical technology advances sufficiently to repair nerve damage or regenerate organs. You could put a kind of guarantee into this by only having your head or brain preserved, so the minimum viable tech level for resurrection would be regrowing a body. I'd be more concerned with the emotional and mental challenges of being revived centuries hence, which would be considerable to say the least.