Hello again, R. Miller. It's been a while! This time around, I'll keep my cool since this isn't a debate section.
Getting to the point, I have to say there are no applicable, systematic epistemologies that can be adopted and used to think our way to the Face of God. It just doesn't work that way; no, we're left to our Existential sources from which to make the best response to the Christian faith we can once we've become familiar with the message. And that's that. So, pick an epistemological framework or method, and go with as far as you can. The Lord, in His own way, will have to help you the rest of the way.
If I were to give you some straight laced advice, I'd adopt
Philosophical Hermeneutics as your gate by which to approach the Christian faith rather than attempting to find what we might call a sheer epistemology.
That's the starting point, my friend, along with some ongoing prayer over the next decade.