Seeking a balance between Reason and Faith is clearly the approach of the Rambam and the Gra.

I mean to religious fanaticism has not impressed me much, nor the opposite of "science-ism"--the belief that only what science says is true.  So I definitely go with the medieval approach of seeking a balance between reason and Faith. But I can not do that with the medieval approach alone without the insights of Kant and Hegel.

I mean anyone will be struck with the fact that the medieval approach assumes axioms that do not seem valid, though the logic is always rock solid. Later philosophers tend to circular reasoning.
So Kant and Hegel seem quite necessary for the project the Rambam was considering.