How much money to make to live decent in southern california?

im 19 gonna be going to college here soon want to know what should i go for i want to go for 2 years but if i have to 4 years.. i just want a middle cl life nothing to richie.how much would i have to make to afford two nice 25,000 dollar car used or new for me and my wife, a decent KB track home usually around 300,000-500,000 which is two story's 4 bedroom,3 bath with all the bills electric,trash,water,phone,gas,t.v,inter… payment,gas for cars,insurance.i want to live down the hill kinda near foothill,Ontario,mira loma,norco,fontana,how much do me and my wife to make together to afford a nice decent life and yes in california what i am asking for is middle cl life for any one out there that lives in other states that think this is to much