This study introduces an innovative Finite Element Analysis (FEA) optimization framework to enhance understanding and control of thermo-viscoelastic behavior in composite manufacturing under variable thermal conditions. By integrating multi-objective functions that include both thermo-viscoelastic and Cure Hardening Instantaneously Linear Elastic (CHILE) models, the framework aims to identify critical regions within the design space where viscoelastic properties significantly influence processing outcomes. Our ongoing efforts focus on pinpointing areas where thermo-viscoelastic considerations are crucial, thereby refining process optimization strategies within the field.