‘If’ is the key word here… people spend half their lives learning just one of theses disciplines to be good enough to work along with dozens if not hundreds of other professionals on a game that might or might not be successful.
What makes you think you’ll be able learn all that and throw a game just like that? A CoD or a Battlefield is not an indie game made by some post graduation students in their moms garage you know.
Besides, ‘the art side’ isnt just a little tiny insignificant bit you might be slightly worried about, its almost the whole friggin game! Its concept art, its modeling, its texturing, its animation, its lighting, its environment, its story design, its music, hell even some aspects of programming might be considered art!
If you cant do art, you wont make a game like the one you are planning to do - at least not on your own.
I mean its good to dream and its good to reach for the stars… but man you gotta build a rocket first, and a space station, and hire scientists and people to develop and monitor everything, and do the astronaut training thing etc. Then you gotta aim that rocket scientifically and launch it! … and In the end, dont forget to be inside the rocket and go the long journey, or youll watch from the ground how someone else reaches the stars.