i have agx/gf210.. im happy with them but i want coil overs now.. i would but in the extra cash and get coilovers. good springs and struts can cost about $600.. megan or ksports cost around $800 now... also get sway bar.. omfg do they make a difference..
as for brakes the stock brakes are great for stock power. get new pads and rotor.
later get z32 brakes/ braided lines/ rotors..