Power wire and fuse size help on new system?

I have 2 amps to hook up. First amp is an A/B 4-Channel pushing 100rms per channel @4ohm with 3x25a fuses(Alpine MRP-F600). The second amp is a D mono amp pushing 800rms @2ohms with3x30a fuses(Phoenix Gold Ryval V8001).My alternator has a 120A rating.Any other suggestions are welcomed!!!