Of course we can remain agnostic with respect to the god question. Plenty of people, reasonably do. Moreover, I think the argument are preponderantly against the god option, so I don't even think one needs to be agnostic.

I don't disagree with the idea that reason is limited. However, I strongly reject any notion that faith goes "beyond" reason, whatever that means. If reason is insufficient then the only option is to shut up and wait.