A modified nonlinear Schrodinger equation (MNSE) describing nonlinear ion acoustic waves (IAW) in a highly dispersive and inhomogeneous plasma with two electron components having nonuniform temperatures is derived. The system is found to be governed by effective temperature as well as the effective inhomogeneity scale lengths. Due to the second electron component, width and maximum amplitude of the envelope solitons decrease. Numerical evaluation shows that an envelope soliton splits into two envelope solitons, however, the splitting time is longer compared to the one with one electron component. The effect of the second electron component on the envelope holes is more drastic in the sense that splitting either does not take place or if it does, it happens after a very long time which may not be practical.