can i use gmax for modeling
Sure you can use whatever you want, the question is, what are you modelling?
Player models, map objects, saber hilts, vehicles?
Gmax cannot be used to compile a player model or a vehicle.
so i could model enything but player models and vehicles
Sure you can model everything (including player models and vehicles) but you wont be able to compile the player models or vehicles into a .glm.
So the problem is the compiling ;).