...crazy, at the very least. [Could suck, but he'd like to know more first.]
[Thinking about that. Now that IS a good question.] Hell is supposed to be torture, horrible. Now, clearly, you could still function after that. But you also had a life time of experience to help keep your own mind.
[Which could be a problem with his lack of memories and them having only a little life experience in Sabra La Tau, even if there's a lot of trauma. It was really hard for him to even take a good guess.]
Don't take memories alone. Ever. Not with that being around there. You're going to need a lot of support when it does happen. And if it gets so bad we can't help...
There's Lacerta.
But you're human, so, you'll have human reactions. Not like you'll explode or something.