Car audio, I want a sound system put in, help?

So, I have a 97 monte Carlo. I want 300w kicker dual subs. 270 watt kicker door speakers. 300 watt alpine in my back window. Would that be a stupid choice? And what I need to know, is should I get a 400watt kicker amp or should I go with a 1300 power acoustik amp? Any opinions greatly appreciated thankyou!