I agree with your leaning toward special revelation as a better source of knowledge of God, especially because Scripture is the primary resource that informs us about God. According to the Wesleyan Quadrilateral, none of the other sources of the quadrilateral can operate without it.
I agree, also, with your concerns about our sinfulness that distorts our view and interpretation of general revelation, which is why I feel that Unveiled Continuity as the most valid position of the four that were discussed in the reading. This position addresses the distortion that sin causes by requiring that God, through Scripture, clears up the distortion for us. So, both general and special revelation are useful, but special is required to clear up the misinterpretation of general that our sin causes.
I agree, also, with your concerns about our sinfulness that distorts our view and interpretation of general revelation, which is why I feel that Unveiled Continuity as the most valid position of the four that were discussed in the reading. This position addresses the distortion that sin causes by requiring that God, through Scripture, clears up the distortion for us. So, both general and special revelation are useful, but special is required to clear up the misinterpretation of general that our sin causes.