Is music worth it

I have been looking over a LOT of posts on stereo mods. I am very much into music, but almost as into lazy. I have already rammed a box w/ two 12s into my trunk and have a set of sony 3 way 6x9's and hu ready to go in as well. The factory unit and speakers still work umm well but I would like to do the switch. Is it really worth the trouble? How long does it take? I really don't want to mess anything up. Any of you that are writhing right now in fear of my poor svx with a punk 21 year old thumping down the road running this car into the ground, fear not!! I just want a little oomph. I drive this thing like a baby.