I decided to follow some step-by-step tutorials and got a better hang on 3D. I also was afraid of the limits but the OG Xbox was a powerhouse in the past so I shouldn't be too scared of it. Not for what I'm trying to do for it. These models aren't perfect and I will make new ones for my game engine.
I took the easier path and will continue with these models I made. Like it can work cause high poly can look ugly at times. Also do anyone have an idea how to make an optimized texture storage for multiple eye textures? It was first gonna be uv offsetting but I got lost on that.