This contribution proposes an encoder-only method for Video-based Gaussian Splat Coding (GSC) that optimizes compression efficiency by dynamically reordering 3D Gaussian attribute components (such as Spherical Harmonics coefficients) before they are packed into 2D video frames. By analyzing the pixel data at the boundaries of adjacent blocks based on the Sum of Absolute Differences (SAD) determines a packing sequence that maximizes spatial correlation. The optimized order leverages the flexibility of the explicit packing mode already defined in the Gaussian Splatting Information (GSI) SEI message, requiring zero changes to the decoder. It is proposed to add this process to the GSC VSEI framework and enable it by default.