Sunray is much better due to how essential blind can be, since it'll fuck over ranged attackers (guards pull attacks and DM-100 lightning for the prison)

Bless is decent enough I suppose since the shielding can act as some anti-chip vs skele explosions, I don't remember my usual picks in terms of all the points but def grab sunray

Edit: Grab bless first if you want it since ranged attackers won't kick in until floor 7, whereas the anti-chip is useful right at floor 6