I own a 1998 (3rd Gen) 4runner and it will do everything a hunting rig needs to do except have room for lot of gear. You did not say what game you will be hunting but with the seats up there is little room for gear no less a animal.
You say you are going to install a hitch so I assume you will have a trailer available and that solves the issue of transporting a animal.
As far as capable off road it is as good as any and better than most.
