What wire size should I get?

Im getting 2 12" 800W max dual 2 OHM subwoofers and a 2000W max mono class D amp. What siz wiring should I get? I was thinking that some 4 gauge would work. Do you guys think that 4 gauge is too big or too small? Thx

if the issue is money get what you can afford, the thinner gauges usually vary in price by pennies...
if you got the money go for it...future proof and upgrade proof your system, get the 0/1 gauge, it's what i run...

4 gauge will work, 2 Ga or 1/0 will also work. Try using welding supply cable, it's cheaper.