im thinking of getting this pioneer amp

GM-D8500M

Pioneer USA - GM-D8500M - Class-D Mono Amplifier with 1200 Watts Max. Power

Continuous Power (4 ohm) 300W x 1
Continuous Power (2 ohm) 600W x 1

and was wondering if an 8 guage kit would do? or do i need to go with 4 guage?

Thanks guys