This scientific manuscript presents a systematic sensitivity analysis and numerical evaluation of the Planck-MDW 1.0 framework, which extends the MDW 2.2 galactic dynamics model to the inflationary scale. The core of this work focuses on the dimensional reduction from an 8-dimensional meta-geometry to a 4-dimensional effective theory, where the conformal coupling \xi = 1/6 and the slow-roll parameter \epsilon = 3/8 are derived from first principles rather than being fitted to data. Key findings include: Non-Gaussianity: Prediction of a unique equilateral signature f_{NL} \approx -36, which is within the 1-sigma bounds of Planck 2018 data and serves as a primary target for future CMB-S4 missions. Dark Matter Origin: Demonstration that Primordial Black Holes (PBHs) in the 10^{15} g mass range constitute 50-90% of the Dark Matter fraction, resulting naturally from the ultra-slow-roll phase. Sensitivity Analysis: Verification of the model's robustness, showing that observables are stable against +/- 50% variations in quantum parameters, effectively eliminating the fine-tuning problem. Falsifiability: The model establishes three independent, testable pillars: CMB-S4 non-Gaussianity, Euclid weak lensing profiles (R^{-2} falloff), and PBH microlensing constraints. This manuscript provides the missing link between high-dimensional geometry and observable cosmological data, offering a concrete and falsifiable alternative to the \LambdaCDM model.