Let me see if I can explain my objection to (1) a different way. Rationalists do not privilege atheism. They privilege parsimony. This is basically a tautology. The only way to subscribe to both rationality and theistic religion is compartmentalization. Saying you want to be rational and a theist is equivalent to saying you want to make a special exception to the principles you follow in every other situation when the subject of God comes up. That's going to take a particular kind of strong argument.
You're telling me that it's essentially impossible to be theist and fully rational. You're saying that not only do rationalists privilege atheism, but if fact they have to follow it by definition, unless they manage to deceive themselves.
I disagree with your objection and I believe that it is possible to reconcile rationality and religion.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.