Mercy and compassion are among God's primary attributes, so I think that such souls will be treated kindly.
I'm not at all sympathetic with those acts, but my idea from neutral point of view is very similar to yours.
I don't recall any biblical prohibitions on suicide,
Correct.
When a person gets to a place of anguish and despair where suicide becomes a choice worthy of consideration, they are beyond the point of being able to evaluate the choice rationally.
Very considerate word. Nice.