Building cracking machine

Hello,

I'm building a cracking machine and have aprox. 4k dollars for it.
The config i'm thinking is something like:
Intel Core I7-8700k
CORSAIR Vengeance LPX 32G
Samsung 850
3 x EVGA GeForce GTX 1080 Ti 
MSI Z370 GAMING M5
Is this a good config?

I also have a doubt regarding the power supply. I've used the evga power meter and it recommends a power supply with 1300 watts. Is it really enough?

Thanks!