help!!! what mod should i do next CAMS???

i have a 2002 gt with CAI, 70mm TB and PLENUM, bbk LT, o/r X pipe, and magnaflow exhaust, steeda UDP, and diablosport predator tuner (93 octane tune for now) i was wondering what mod should i get next without having to go with turbo or sc or n02, since the car is a daily driver and i do driver alot plus i want it to be reliable, i was thinkin about getting comp cams stage 2 and the comp cam gears also? what do you guys think? is it worth it? would it really make a diffrence? if i do so i will get the car dyno tuned with a custome tune aftwards, im just wonder if its worth spending the money??

and i cant do heads for not so will the stock ones be fine?? also the valve springs will the stock ones be fine? please help me out in anyways want to get this done asap

thanks in advance