Very weird Cordelia dilemma

I got some problems.I had previously summoned two 5* Cordelias, both which were -Spd +Hp,sadly (before 2.5,and for the record,I had merged them).I just summoned a -Atk +Hp Cordelia (4*).Should I save them for another good Cordelia or fodder for galeforce (though I don't think I have any characters worth giving it to)