I would recommend getting a wiring kit for a 500w amp or bigger.
Just keep in mind when you buy the kit, is this all you need or will you expand later. If you plan o expanding your system (more powerful amps, more speakers, etc.) get a bigger kit. if you want to buy everything separate here is a list of what you need for this setup, go with bigger power and ground wires, if you pla on adding more to the system.
power wire - about 20' of 8AWG wire
Ground - about 12" of 8AWG wire
Remote - about 15' of 16-20 AWG wire
speakers - I would buy a roll of 30' 14AWG wire
RCA's - 15' dual rca's (two male connectors at each end)
Fuse holder - 8AWG min, make sure to install this right off the battery, no more than 12" away. This should be the first device that the power hits.