What size relays?

Relay, Fan, 30 Amp, Single Pole, Each - each 26.95
http://static.summitracing.com/global/images/prod/large/prf-30101.jpg
Switch, Toggle, Constant, Universal, Steel, Chrome, 25 Amps, Each - each 6.95
http://static.summitracing.com/global/images/prod/large/sum-g1435.jpg
Fuse Block, 4-Circuit, 15 Amps per Circuit, - 11.95
http://static.summitracing.com/global/images/prod/large/sum-900170_w.jpg