Car audio question....help!?

If i run 2 Sony cl D (XMD2002GRT) 550W RMS anps each going to a 12'' 380w RMS subs, and then a 200w RMS 2-channel amp to my speakers, the new sony MEXBR 5000 HU in a 2007 scion tc....will i have any problems? Will i need to update all of my power wires, altenator or battery...or will i be fine? thanks for your help!