Think I bought the wrong wiring kit?

I just bought a hifonics brutus 1700.1 amp, and the wiring I bought for it is an EFX 4-gauge Amplifier Wiring Kit. I don't know too much about all of the wiring so I was wondering if this wire is too small. The other question I have is about the fuse. The amp"s fuse rating is 160A and the wiring kit comes with a 100A fuse, and I was wondering if i could just use a different fuse for it. I think I screwed up on this one, but I'd appreciate any advice.

 

you could get away with using it, i am running 2 ken-wood 1100 watt amps off 4 gauge and a larger fuse with no problems

 

What are the chances that you would actually push it past 100 amps though? That is a sheeite-ton of wattage equivalent! You must like a bit o' blood leaking from your ears