don't waste your money on the SSHD. If you're spending the big bucks, get a 1 or 2TB Samsung 850 Pro SATA SSD or the same as an Evo. If that's too rich for your blood, consider going up to a 1TB PCIe NVMe m.2 and a 1TB Samsung 850 Evo SATA SSD to start. If necessary, just back that all up with a 1 or 2TB HDD.
And if it were my build, I'd be water-cooling that CPU...