I agree with many of your (and Lewis’ conclusions, however, I do think of things a bit differently. First, you do know that almost all of Lewis’ theology is a regurgitation of Augustine? Don’t get me wrong, a profound thinker and writer, but nonetheless, unoriginal when it comes to Christian theology.

Also the free-will argument doesn’t work in the problem of pain because God could have created us in perfect union with him without knowing the difference. That free-will is the only possibility of genuine love may be true when it comes to humans, but not in relation to the very thing that created beings and wills to begin with. In other words, an all powerful creator could have created us as perfect genuine lovers of himself, but he surely did not.

I would love to know what you think,
~me