Thanks for sharing your thoughts Bob! I will send a link to you should I address it. In short- one would have to show God cannot have morally sufifcient reasons for allowing evil while making this claim from a worldview that cannot consistently allow for objective moral values to determine what is evil in the first place. The cross of Christ is also central to the Christian response to evil. I have a piece coming on the historical evidence for the Gospels which may interest you. I would argue this strongly goes against the theory the Gospels were later doctored. Keen to hear your thoughts on my resurrection guide from a few months back.
Regarding Euthyphro this has been addressed and refuted by multiple modern philosophers. God and the Good are one and the same. Inextricably linked. God is good by definition so cannot will something not good.
Good on you for thinking through these topics. Very important!